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data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contingut</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">amaga</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inici</div> </a> </li> <li id="toc-Per_què_utilitzem_el_negre" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Per_què_utilitzem_el_negre"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Per què utilitzem el negre</span> </div> </a> <ul id="toc-Per_què_utilitzem_el_negre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Comparació_amb_el_RGB" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Comparació_amb_el_RGB"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Comparació amb el RGB</span> </div> </a> <ul id="toc-Comparació_amb_el_RGB-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Conversions" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Conversions"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Conversions</span> </div> </a> <button aria-controls="toc-Conversions-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Commuta la subsecció Conversions</span> </button> <ul id="toc-Conversions-sublist" class="vector-toc-list"> <li id="toc-Conversió_entre_RGB_i_CMYK" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversió_entre_RGB_i_CMYK"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Conversió entre RGB i CMYK</span> </div> </a> <ul id="toc-Conversió_entre_RGB_i_CMYK-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Conversió_de_CMYK_a_RGB" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversió_de_CMYK_a_RGB"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Conversió de CMYK a RGB</span> </div> </a> <ul id="toc-Conversió_de_CMYK_a_RGB-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Mapatge_de_RGB_i_CMYK" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Mapatge_de_RGB_i_CMYK"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>Mapatge de RGB i CMYK</span> </div> </a> <ul id="toc-Mapatge_de_RGB_i_CMYK-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Utilització_en_les_arts_gràfiques" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Utilització_en_les_arts_gràfiques"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Utilització en les arts gràfiques</span> </div> </a> <ul id="toc-Utilització_en_les_arts_gràfiques-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referències" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referències"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Referències</span> </div> </a> <ul id="toc-Referències-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vegeu_també" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vegeu_també"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Vegeu també</span> </div> </a> <ul id="toc-Vegeu_també-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Enllaços_externs" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Enllaços_externs"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Enllaços externs</span> </div> </a> <ul id="toc-Enllaços_externs-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contingut" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Commuta la taula de continguts." > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Commuta la taula de continguts.</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Model de color CMYK</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vés a un article en una altra llengua. Disponible en 62 llengües" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-62" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">62 llengües</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A7%D9%84%D9%86%D9%85%D9%88%D8%B0%D8%AC_%D8%A7%D9%84%D9%84%D9%88%D9%86%D9%8A_%D8%B3%D9%8A%D8%A7%D9%86_%D9%85%D8%A7%D8%AC%D9%86%D8%AA%D8%A7_%D8%A3%D8%B5%D9%81%D8%B1_%D8%A3%D8%B3%D9%88%D8%AF" title="النموذج اللوني سيان ماجنتا أصفر أسود - àrab" lang="ar" hreflang="ar" data-title="النموذج اللوني سيان ماجنتا أصفر أسود" data-language-autonym="العربية" data-language-local-name="àrab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/CMYK" title="CMYK - azerbaidjanès" lang="az" hreflang="az" data-title="CMYK" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaidjanès" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/CMYK" title="CMYK - bavarès" lang="bar" hreflang="bar" data-title="CMYK" data-language-autonym="Boarisch" data-language-local-name="bavarès" class="interlanguage-link-target"><span>Boarisch</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/CMYK" title="CMYK - belarús" lang="be" hreflang="be" data-title="CMYK" data-language-autonym="Беларуская" data-language-local-name="belarús" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/CMYK_%D1%86%D0%B2%D0%B5%D1%82%D0%BE%D0%B2%D0%B8_%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB" title="CMYK цветови модел - búlgar" lang="bg" hreflang="bg" data-title="CMYK цветови модел" data-language-autonym="Български" data-language-local-name="búlgar" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B8%E0%A6%BF%E0%A6%8F%E0%A6%AE%E0%A6%93%E0%A6%AF%E0%A6%BC%E0%A6%BE%E0%A6%87%E0%A6%95%E0%A7%87_%E0%A6%B0%E0%A6%82_%E0%A6%AE%E0%A6%A1%E0%A7%87%E0%A6%B2" title="সিএমওয়াইকে রং মডেল - bengalí" lang="bn" hreflang="bn" data-title="সিএমওয়াইকে রং মডেল" data-language-autonym="বাংলা" data-language-local-name="bengalí" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/CMYK" title="CMYK - bretó" lang="br" hreflang="br" data-title="CMYK" data-language-autonym="Brezhoneg" data-language-local-name="bretó" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/CMYK" title="CMYK - txec" lang="cs" hreflang="cs" data-title="CMYK" data-language-autonym="Čeština" data-language-local-name="txec" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/CMYK" title="CMYK - danès" lang="da" hreflang="da" data-title="CMYK" data-language-autonym="Dansk" data-language-local-name="danès" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/CMYK-Farbmodell" title="CMYK-Farbmodell - alemany" lang="de" hreflang="de" data-title="CMYK-Farbmodell" data-language-autonym="Deutsch" data-language-local-name="alemany" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/CMYK" title="CMYK - grec" lang="el" hreflang="el" data-title="CMYK" data-language-autonym="Ελληνικά" data-language-local-name="grec" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/CMYK_color_model" title="CMYK color model - anglès" lang="en" hreflang="en" data-title="CMYK color model" data-language-autonym="English" data-language-local-name="anglès" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/CMFN_(kolormodelo)" title="CMFN (kolormodelo) - esperanto" lang="eo" hreflang="eo" data-title="CMFN (kolormodelo)" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Modelo_de_color_CMYK" title="Modelo de color CMYK - espanyol" lang="es" hreflang="es" data-title="Modelo de color CMYK" data-language-autonym="Español" data-language-local-name="espanyol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/CMYK" title="CMYK - estonià" lang="et" hreflang="et" data-title="CMYK" data-language-autonym="Eesti" data-language-local-name="estonià" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/CMYK_kolore-eredua" title="CMYK kolore-eredua - basc" lang="eu" hreflang="eu" data-title="CMYK kolore-eredua" data-language-autonym="Euskara" data-language-local-name="basc" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D8%AF%D9%84_%D8%B1%D9%86%DA%AF%DB%8C_%D8%B3%DB%8C%E2%80%8C%D8%A7%D9%85%E2%80%8C%D9%88%D8%A7%DB%8C%E2%80%8C%DA%A9%DB%8C" title="مدل رنگی سی‌ام‌وای‌کی - persa" lang="fa" hreflang="fa" data-title="مدل رنگی سی‌ام‌وای‌کی" data-language-autonym="فارسی" data-language-local-name="persa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/CMYK" title="CMYK - finès" lang="fi" hreflang="fi" data-title="CMYK" data-language-autonym="Suomi" data-language-local-name="finès" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Quadrichromie" title="Quadrichromie - francès" lang="fr" hreflang="fr" data-title="Quadrichromie" data-language-autonym="Français" data-language-local-name="francès" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/CMYK-kleursysteem" title="CMYK-kleursysteem - frisó occidental" lang="fy" hreflang="fy" data-title="CMYK-kleursysteem" data-language-autonym="Frysk" data-language-local-name="frisó occidental" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Pr%C3%B3iseas_ceithre_dhath" title="Próiseas ceithre dhath - irlandès" lang="ga" hreflang="ga" data-title="Próiseas ceithre dhath" data-language-autonym="Gaeilge" data-language-local-name="irlandès" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/CMYK" title="CMYK - gallec" lang="gl" hreflang="gl" data-title="CMYK" data-language-autonym="Galego" data-language-local-name="gallec" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/CMYK" title="CMYK - hebreu" lang="he" hreflang="he" data-title="CMYK" data-language-autonym="עברית" data-language-local-name="hebreu" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A5%80_%E0%A4%8F%E0%A4%AE_%E0%A4%B5%E0%A4%BE%E0%A4%88_%E0%A4%95%E0%A5%87_%E0%A4%B5%E0%A4%B0%E0%A5%8D%E0%A4%A3_%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%A4%E0%A4%BF%E0%A4%B0%E0%A5%82%E0%A4%AA" title="सी एम वाई के वर्ण प्रतिरूप - hindi" lang="hi" hreflang="hi" data-title="सी एम वाई के वर्ण प्रतिरूप" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/CMYK" title="CMYK - croat" lang="hr" hreflang="hr" data-title="CMYK" data-language-autonym="Hrvatski" data-language-local-name="croat" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/CMYK_sz%C3%ADnt%C3%A9r" title="CMYK színtér - hongarès" lang="hu" hreflang="hu" data-title="CMYK színtér" data-language-autonym="Magyar" data-language-local-name="hongarès" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/CMYK" title="CMYK - armeni" lang="hy" hreflang="hy" data-title="CMYK" data-language-autonym="Հայերեն" data-language-local-name="armeni" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Cyan_Magenta_Yellow_Key_(skala_warna)" title="Cyan Magenta Yellow Key (skala warna) - indonesi" lang="id" hreflang="id" data-title="Cyan Magenta Yellow Key (skala warna)" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesi" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/CMYK" title="CMYK - islandès" lang="is" hreflang="is" data-title="CMYK" data-language-autonym="Íslenska" data-language-local-name="islandès" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/CMYK" title="CMYK - italià" lang="it" hreflang="it" data-title="CMYK" data-language-autonym="Italiano" data-language-local-name="italià" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/CMYK" title="CMYK - japonès" lang="ja" hreflang="ja" data-title="CMYK" data-language-autonym="日本語" data-language-local-name="japonès" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/CMYK" title="CMYK - coreà" lang="ko" hreflang="ko" data-title="CMYK" data-language-autonym="한국어" data-language-local-name="coreà" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/CMYK" title="CMYK - kurd" lang="ku" hreflang="ku" data-title="CMYK" data-language-autonym="Kurdî" data-language-local-name="kurd" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/CMYK" title="CMYK - lituà" lang="lt" hreflang="lt" data-title="CMYK" data-language-autonym="Lietuvių" data-language-local-name="lituà" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Ci%C4%81nfuks%C4%ABndzeltenmelnais_kr%C4%81su_modelis" title="Ciānfuksīndzeltenmelnais krāsu modelis - letó" lang="lv" hreflang="lv" data-title="Ciānfuksīndzeltenmelnais krāsu modelis" data-language-autonym="Latviešu" data-language-local-name="letó" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mhr mw-list-item"><a href="https://mhr.wikipedia.org/wiki/CMYK-%D1%82%D3%B1%D1%81%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D1%8C" title="CMYK-тӱсмодель - Eastern Mari" lang="mhr" hreflang="mhr" data-title="CMYK-тӱсмодель" data-language-autonym="Олык марий" data-language-local-name="Eastern Mari" class="interlanguage-link-target"><span>Олык марий</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/CMYK" title="CMYK - macedoni" lang="mk" hreflang="mk" data-title="CMYK" data-language-autonym="Македонски" data-language-local-name="macedoni" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B8%E0%B4%BF.%E0%B4%8E%E0%B4%82.%E0%B4%B5%E0%B5%88.%E0%B4%95%E0%B5%86._%E0%B4%A8%E0%B4%BF%E0%B4%B1%E0%B4%B5%E0%B5%8D%E0%B4%AF%E0%B4%B5%E0%B4%B8%E0%B5%8D%E0%B4%A5" title="സി.എം.വൈ.കെ. നിറവ്യവസ്ഥ - malaiàlam" lang="ml" hreflang="ml" data-title="സി.എം.വൈ.കെ. നിറവ്യവസ്ഥ" data-language-autonym="മലയാളം" data-language-local-name="malaiàlam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Cyan_Magenta_Yellow_Key" title="Cyan Magenta Yellow Key - malai" lang="ms" hreflang="ms" data-title="Cyan Magenta Yellow Key" data-language-autonym="Bahasa Melayu" data-language-local-name="malai" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/CMYK" title="CMYK - neerlandès" lang="nl" hreflang="nl" data-title="CMYK" data-language-autonym="Nederlands" data-language-local-name="neerlandès" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/CMYK" title="CMYK - noruec bokmål" lang="nb" hreflang="nb" data-title="CMYK" data-language-autonym="Norsk bokmål" data-language-local-name="noruec bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Quadricromia" title="Quadricromia - occità" lang="oc" hreflang="oc" data-title="Quadricromia" data-language-autonym="Occitan" data-language-local-name="occità" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-olo mw-list-item"><a href="https://olo.wikipedia.org/wiki/CMYK" title="CMYK - Livvi-Karelian" lang="olo" hreflang="olo" data-title="CMYK" data-language-autonym="Livvinkarjala" data-language-local-name="Livvi-Karelian" class="interlanguage-link-target"><span>Livvinkarjala</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/CMYK" title="CMYK - polonès" lang="pl" hreflang="pl" data-title="CMYK" data-language-autonym="Polski" data-language-local-name="polonès" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/CMYK" title="CMYK - portuguès" lang="pt" hreflang="pt" data-title="CMYK" data-language-autonym="Português" data-language-local-name="portuguès" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Modelul_de_culoare_CMYK" title="Modelul de culoare CMYK - romanès" lang="ro" hreflang="ro" data-title="Modelul de culoare CMYK" data-language-autonym="Română" data-language-local-name="romanès" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/CMYK" title="CMYK - rus" lang="ru" hreflang="ru" data-title="CMYK" data-language-autonym="Русский" data-language-local-name="rus" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/CMYK_%E0%B7%80%E0%B6%BB%E0%B7%8A%E0%B6%AB_%E0%B6%86%E0%B6%9A%E0%B7%98%E0%B6%AD%E0%B7%92%E0%B6%BA" title="CMYK වර්ණ ආකෘතිය - singalès" lang="si" hreflang="si" data-title="CMYK වර්ණ ආකෘතිය" data-language-autonym="සිංහල" data-language-local-name="singalès" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/CMYK_color_model" title="CMYK color model - Simple English" lang="en-simple" hreflang="en-simple" data-title="CMYK color model" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Barvni_model_CMYK" title="Barvni model CMYK - eslovè" lang="sl" hreflang="sl" data-title="Barvni model CMYK" data-language-autonym="Slovenščina" data-language-local-name="eslovè" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/CMYK" title="CMYK - albanès" lang="sq" hreflang="sq" data-title="CMYK" data-language-autonym="Shqip" data-language-local-name="albanès" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/CMYK" title="CMYK - serbi" lang="sr" hreflang="sr" data-title="CMYK" data-language-autonym="Српски / srpski" data-language-local-name="serbi" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/CMYK" title="CMYK - suec" lang="sv" hreflang="sv" data-title="CMYK" data-language-autonym="Svenska" data-language-local-name="suec" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A3%E0%B8%B0%E0%B8%9A%E0%B8%9A%E0%B8%AA%E0%B8%B5_CMYK" title="ระบบสี CMYK - tai" lang="th" hreflang="th" data-title="ระบบสี CMYK" data-language-autonym="ไทย" data-language-local-name="tai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/CMYK_renk_modeli" title="CMYK renk modeli - turc" lang="tr" hreflang="tr" data-title="CMYK renk modeli" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/CMYK" title="CMYK - tàtar" lang="tt" hreflang="tt" data-title="CMYK" data-language-autonym="Татарча / tatarça" data-language-local-name="tàtar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/CMYK" title="CMYK - ucraïnès" lang="uk" hreflang="uk" data-title="CMYK" data-language-autonym="Українська" data-language-local-name="ucraïnès" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%B3%DB%8C_%D8%A7%DB%8C%D9%85_%D9%88%D8%A7%D8%A6%DB%8C_%DA%A9%DB%92_%D8%B1%D9%86%DA%AF_%D9%85%D8%A7%DA%88%D9%84" title="سی ایم وائی کے رنگ ماڈل - urdú" lang="ur" hreflang="ur" data-title="سی ایم وائی کے رنگ ماڈل" data-language-autonym="اردو" data-language-local-name="urdú" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/M%C3%B4_h%C3%ACnh_m%C3%A0u_CMYK" title="Mô hình màu CMYK - vietnamita" lang="vi" hreflang="vi" data-title="Mô hình màu CMYK" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%8D%B0%E5%88%B7%E5%9B%9B%E5%88%86%E8%89%B2%E6%A8%A1%E5%BC%8F" title="印刷四分色模式 - xinès wu" lang="wuu" hreflang="wuu" data-title="印刷四分色模式" data-language-autonym="吴语" data-language-local-name="xinès wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%8D%B0%E5%88%B7%E5%9B%9B%E5%88%86%E8%89%B2%E6%A8%A1%E5%BC%8F" title="印刷四分色模式 - xinès" lang="zh" hreflang="zh" data-title="印刷四分色模式" data-language-autonym="中文" data-language-local-name="xinès" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/CMYK%E8%89%B2%E5%BD%A9%E6%A8%A1%E5%BC%8F" title="CMYK色彩模式 - cantonès" lang="yue" hreflang="yue" data-title="CMYK色彩模式" data-language-autonym="粵語" data-language-local-name="cantonès" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q166432#sitelinks-wikipedia" title="Modifica enllaços interlingües" class="wbc-editpage">Modifica els enllaços</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Espais de noms"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Model_de_color_CMYK" title="Vegeu el contingut de la pàgina [c]" accesskey="c"><span>Pàgina</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Discussi%C3%B3:Model_de_color_CMYK&action=edit&redlink=1" rel="discussion" class="new" 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id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aparença"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aparença</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">amaga</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">De la Viquipèdia, l'enciclopèdia lliure</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ca" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:CMYK_color_swatches.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/CMYK_color_swatches.svg/220px-CMYK_color_swatches.svg.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/CMYK_color_swatches.svg/330px-CMYK_color_swatches.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/CMYK_color_swatches.svg/440px-CMYK_color_swatches.svg.png 2x" data-file-width="512" data-file-height="512" /></a><figcaption>Cian, magenta, groc i negre</figcaption></figure> <p><b>CMYK</b> (<b>CMGN</b> en català) <a href="/wiki/Acr%C3%B2nim" title="Acrònim">acrònim</a> anglès de <i><b>C</b>yan <b>M</b>agenta <b>Y</b>ellow <b>K</b>ey (o blac<b>K</b>)</i> (<a href="/wiki/Cian" title="Cian">cian</a>, <a href="/wiki/Magenta_(color)" title="Magenta (color)">magenta</a>, <a href="/wiki/Groc" title="Groc">groc</a> i clau (o <a href="/wiki/Negre" title="Negre">negre</a>)). CMYK és un model de sostracció de color utilitzat per a la formació de <a href="/wiki/Color_secundari" title="Color secundari">colors secundaris</a>. Aquest model està basat en la mescla de pigments dels <a href="/wiki/Colors" class="mw-redirect" title="Colors">colors</a> següents per fer-ne de nous: cian, magenta, groc i negre.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>La mescla ideal de color CMY és la barreja dels tres <a href="/wiki/Colors_primaris" class="mw-redirect" title="Colors primaris">colors primaris</a> en parts iguals i en la seva màxima intensitat en resulta el negre. CMYK treballa amb l'absorció lleugera. Els colors que veiem són formats per la part de llum que no s'absorbeix. En <b>CMYK</b>, el magenta més el groc produeix el vermell, el magenta més cian fan el blau i el cian més el groc generen el verd.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Per referir-se al negre, s'utilitza <b>K</b> en lloc de <b>B</b> perquè no hi hagi confusions amb el <i>Blue</i> (blau).<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Per_què_utilitzem_el_negre"><span id="Per_qu.C3.A8_utilitzem_el_negre"></span>Per què utilitzem el negre</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=1" title="Modifica la secció: Per què utilitzem el negre"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:SubtractiveColorMixing.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/SubtractiveColorMixing.png/220px-SubtractiveColorMixing.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/SubtractiveColorMixing.png/330px-SubtractiveColorMixing.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ac/SubtractiveColorMixing.png/440px-SubtractiveColorMixing.png 2x" data-file-width="500" data-file-height="500" /></a><figcaption>Model substractiu de cian, magenta i groc</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:CMY_components.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/CMY_components.jpg/220px-CMY_components.jpg" decoding="async" width="220" height="657" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/CMY_components.jpg/330px-CMY_components.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/20/CMY_components.jpg/440px-CMY_components.jpg 2x" data-file-width="1600" data-file-height="4780" /></a><figcaption>Una imatge amb els seus components cian, magenta i groc </figcaption></figure> <p>Per diverses raons, el negre que es crea barrejant els tres primaris no és pur i és necessari afegir la tinta negra. Altres raons són: </p> <ul><li>Utilitzar el 100% de les tintes cian, magenta i groc per a crear el negre dona lloc a una capa de tinta que tarda massa a assecar-se, i certs papers fins poden trencar-se.</li></ul> <ul><li>Els textos solen imprimir-se en negre i inclouen detalls molt fins que serien molt complicats d'aconseguir mitjançant la superposició de les tres tintes.</li></ul> <p>El pigment negre és el més econòmic de tots; per tant, crear negre amb tres tintes seria molt més car. Aquest sistema és l'utilitzat per <a href="/wiki/Impremta" title="Impremta">impremtes</a>, <a href="/wiki/Impressora" title="Impressora">impressores</a> i <a href="/wiki/Fotocopiadora" title="Fotocopiadora">fotocopiadores</a> per a reproduir tota la gamma de colors de l'espectre visible, i és conegut com a <i><a href="/wiki/Quadricromia" class="mw-redirect" title="Quadricromia">quadricromia</a></i>. </p> <div class="mw-heading mw-heading2"><h2 id="Comparació_amb_el_RGB"><span id="Comparaci.C3.B3_amb_el_RGB"></span>Comparació amb el RGB</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=2" title="Modifica la secció: Comparació amb el RGB"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>L'ús del quart color permet que el resultat tingui més contrast. Tanmateix, el color que es veu a la pantalla de l'ordinador sovint és diferent del color del mateix objecte en la impressió des de CMYK, i el RGB té diverses <a href="/wiki/Gamma" title="Gamma">gammes</a>. Per exemple, el <a href="/wiki/Blau" title="Blau">blau</a> (rgb 0, 0, 100% purs) és impossible de produir amb CMYK. L'equivalent més proper amb el CMYK és una color blau-violeta. </p><p>Les pantalles dels ordinadors (i d'altres) utilitzen un espai de color del RGB i representen colors com a mescles additives de llum vermella, verda i blava (de la suma de les quals surt la llum blanca). En materials impresos, aquesta combinació lleugera no pot ser reproduïda directament, de manera que les imatges originades a l'ordinador s'han de convertir al CMYK equivalent amb els colors de tinta. </p> <div class="mw-heading mw-heading2"><h2 id="Conversions">Conversions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=3" title="Modifica la secció: Conversions"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:La_Boqueria_color_enhanced.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/La_Boqueria_color_enhanced.jpg/220px-La_Boqueria_color_enhanced.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/La_Boqueria_color_enhanced.jpg/330px-La_Boqueria_color_enhanced.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/79/La_Boqueria_color_enhanced.jpg/440px-La_Boqueria_color_enhanced.jpg 2x" data-file-width="800" data-file-height="600" /></a><figcaption>Foto de referència impresa mitjançant un procés de <a href="/wiki/Quadricromia" class="mw-redirect" title="Quadricromia">quadricromia</a></figcaption></figure> <p>Observar que les conversions aquí estan descrites al millor possible com a "nominals". Poden produir una conversió reversible entre el RGB i un subconjunt de CMYK; és a dir, un pot agafar un color del RGB i convertir a certs colors del CMYK, i d'aquells colors del CMYK s'obtenen els corresponents, els equivalents originals del RGB. Encara que la conversió dels colors de CMYK a colors de RGB, en general, no és reversible. A més, els colors de CMYK poden imprimir-se diferentment que els colors de RGB en un monitor. No hi ha una bona regla de conversió entre el RGB i el CMYK, perquè ni el RGB ni el CMYK són un <a href="/w/index.php?title=Espai_de_color_absolut&action=edit&redlink=1" class="new" title="Espai de color absolut (encara no existeix)">espai de color absolut</a>. </p><p>Aquestes conversions mai no haurien de ser utilitzades en impressions comercials o en cap altra aplicació en la qual sigui important el color. </p> <div class="mw-heading mw-heading3"><h3 id="Conversió_entre_RGB_i_CMYK"><span id="Conversi.C3.B3_entre_RGB_i_CMYK"></span>Conversió entre RGB i CMYK</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=4" title="Modifica la secció: Conversió entre RGB i CMYK"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/Fitxer:La_Boqueria_RGB_VS_CMYK.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/La_Boqueria_RGB_VS_CMYK.jpg/600px-La_Boqueria_RGB_VS_CMYK.jpg" decoding="async" width="600" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/La_Boqueria_RGB_VS_CMYK.jpg/900px-La_Boqueria_RGB_VS_CMYK.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e4/La_Boqueria_RGB_VS_CMYK.jpg/1200px-La_Boqueria_RGB_VS_CMYK.jpg 2x" data-file-width="1600" data-file-height="600" /></a><figcaption>Imatge comparativa en la qual s'observen les diferències en el color entre el model RGB (esquerra) i el model CMYK (dreta)</figcaption></figure> <p>Per a la conversió entre RGB i CMYK, utilitzarem un valor intermedi CMY. El valor del color es representa igual que un <a href="/wiki/Vector_(programaci%C3%B3)" title="Vector (programació)">vector</a>, amb cada component del color que varia de 0.0 (cap color) a 1.0 (color completament saturat): </p> <table cellpadding="4" style="margin-left: 1em;"> <tbody><tr> <td align="right"><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{CMYK}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> <mi>M</mi> <mi>Y</mi> <mi>K</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{CMYK}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9d6491fdcac53d4a7ef1e224a13aa131ed9125ef" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:6.763ex; height:2.343ex;" alt="{\displaystyle t_{CMYK}}"></span></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{C,M,Y,K\}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mi>C</mi> <mo>,</mo> <mi>M</mi> <mo>,</mo> <mi>Y</mi> <mo>,</mo> <mi>K</mi> <mo fence="false" stretchy="false">}</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{C,M,Y,K\}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d3c8aa2994eb3457331318b266e8c04645a24d4d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:15.928ex; height:2.843ex;" alt="{\displaystyle =\{C,M,Y,K\}}"></span> CMYK és el quadrúple <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \left[0,1\right]^{4}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mrow> <mo>[</mo> <mrow> <mn>0</mn> <mo>,</mo> <mn>1</mn> </mrow> <mo>]</mo> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \left[0,1\right]^{4}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/555a6a6f564994658623d3f794681cb492aad4af" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:5.707ex; height:3.343ex;" alt="{\displaystyle \left[0,1\right]^{4}}"></span>, </td></tr> <tr> <td align="right"><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{CMY}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> <mi>M</mi> <mi>Y</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{CMY}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e1850271daafd117e7e41e70679d69924d917e4a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:5.302ex; height:2.343ex;" alt="{\displaystyle t_{CMY}}"></span></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{C,M,Y\}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mi>C</mi> <mo>,</mo> <mi>M</mi> <mo>,</mo> <mi>Y</mi> <mo fence="false" stretchy="false">}</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{C,M,Y\}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/95edd1b744d1194a9e8274fbd05d3fc8a72d4ea1" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:12.828ex; height:2.843ex;" alt="{\displaystyle =\{C,M,Y\}}"></span> CMY és el triple de <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \left[0,1\right]^{3}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mrow> <mo>[</mo> <mrow> <mn>0</mn> <mo>,</mo> <mn>1</mn> </mrow> <mo>]</mo> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \left[0,1\right]^{3}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/54494e360e3df0ec65489f47d5bb3efeb471a6e7" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:5.707ex; height:3.343ex;" alt="{\displaystyle \left[0,1\right]^{3}}"></span>, </td></tr> <tr> <td align="right"><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{RGB}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>R</mi> <mi>G</mi> <mi>B</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{RGB}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4f16808a4fff4e1d2341cfab5c3b1ab4b5c5504f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:4.858ex; height:2.343ex;" alt="{\displaystyle t_{RGB}}"></span></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{R,G,B\}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mi>R</mi> <mo>,</mo> <mi>G</mi> <mo>,</mo> <mi>B</mi> <mo fence="false" stretchy="false">}</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{R,G,B\}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c0f9619c789724a24d0a0746a7373489f3a2c3fa" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:12.201ex; height:2.843ex;" alt="{\displaystyle =\{R,G,B\}}"></span> RGB és el triple de <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \left[0,1\right]^{3}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mrow> <mo>[</mo> <mrow> <mn>0</mn> <mo>,</mo> <mn>1</mn> </mrow> <mo>]</mo> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \left[0,1\right]^{3}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/54494e360e3df0ec65489f47d5bb3efeb471a6e7" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:5.707ex; height:3.343ex;" alt="{\displaystyle \left[0,1\right]^{3}}"></span>. </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Conversió_de_CMYK_a_RGB"><span id="Conversi.C3.B3_de_CMYK_a_RGB"></span>Conversió de CMYK a RGB</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=5" title="Modifica la secció: Conversió de CMYK a RGB"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Passos a seguir en la conversió: primer es converteix <a href="/wiki/CMYK" class="mw-redirect" title="CMYK">CMYK</a> a <a href="/wiki/CMY" class="mw-redirect" title="CMY">CMY</a>; aleshores, es converteix el <a href="/wiki/CMY" class="mw-redirect" title="CMY">CMY</a> pel valor de <a href="/wiki/Model_de_color_RGB" title="Model de color RGB">RGB</a> </p><p>Conversió: </p> <table> <tbody><tr> <td align="right"><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{CMYK}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> <mi>M</mi> <mi>Y</mi> <mi>K</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{CMYK}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9d6491fdcac53d4a7ef1e224a13aa131ed9125ef" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:6.763ex; height:2.343ex;" alt="{\displaystyle t_{CMYK}}"></span></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{C,M,Y,K\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mi>C</mi> <mo>,</mo> <mi>M</mi> <mo>,</mo> <mi>Y</mi> <mo>,</mo> <mi>K</mi> <mo fence="false" stretchy="false">}</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{C,M,Y,K\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/28183bdf4e59dcf838e1d41ddce8b5658a4486d6" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:16.315ex; height:2.843ex;" alt="{\displaystyle =\{C,M,Y,K\}\,}"></span> </td></tr> <tr> <td align="right"><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{CMY}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> <mi>M</mi> <mi>Y</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{CMY}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e1850271daafd117e7e41e70679d69924d917e4a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:5.302ex; height:2.343ex;" alt="{\displaystyle t_{CMY}}"></span></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{C',M',Y'\}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <msup> <mi>C</mi> <mo>′</mo> </msup> <mo>,</mo> <msup> <mi>M</mi> <mo>′</mo> </msup> <mo>,</mo> <msup> <mi>Y</mi> <mo>′</mo> </msup> <mo fence="false" stretchy="false">}</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{C',M',Y'\}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/a2438a2c3d3f9e11662c692c962c5a5bed9a6e92" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:15.097ex; height:3.009ex;" alt="{\displaystyle =\{C',M',Y'\}}"></span> </td></tr> <tr> <td></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{C(1-K)+K,M(1-K)+K,Y(1-K)+K\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mi>C</mi> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>+</mo> <mi>K</mi> <mo>,</mo> <mi>M</mi> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>+</mo> <mi>K</mi> <mo>,</mo> <mi>Y</mi> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>+</mo> <mi>K</mi> <mo fence="false" stretchy="false">}</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{C(1-K)+K,M(1-K)+K,Y(1-K)+K\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/a5b2f27f95fc394973aaa0c7ef07d9a15b32b5e5" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:51.568ex; height:2.843ex;" alt="{\displaystyle =\{C(1-K)+K,M(1-K)+K,Y(1-K)+K\}\,}"></span> </td></tr> <tr> <td align="right"><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{RGB}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>R</mi> <mi>G</mi> <mi>B</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{RGB}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4f16808a4fff4e1d2341cfab5c3b1ab4b5c5504f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:4.858ex; height:2.343ex;" alt="{\displaystyle t_{RGB}}"></span></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{R,G,B\}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mi>R</mi> <mo>,</mo> <mi>G</mi> <mo>,</mo> <mi>B</mi> <mo fence="false" stretchy="false">}</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{R,G,B\}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c0f9619c789724a24d0a0746a7373489f3a2c3fa" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:12.201ex; height:2.843ex;" alt="{\displaystyle =\{R,G,B\}}"></span> </td></tr> <tr> <td></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{1-C',1-M',1-Y'\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mn>1</mn> <mo>−</mo> <msup> <mi>C</mi> <mo>′</mo> </msup> <mo>,</mo> <mn>1</mn> <mo>−</mo> <msup> <mi>M</mi> <mo>′</mo> </msup> <mo>,</mo> <mn>1</mn> <mo>−</mo> <msup> <mi>Y</mi> <mo>′</mo> </msup> <mo fence="false" stretchy="false">}</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{1-C',1-M',1-Y'\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/89917c679e28f2da423e7240810efa157507358e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:27.493ex; height:3.009ex;" alt="{\displaystyle =\{1-C',1-M',1-Y'\}\,}"></span> </td></tr> <tr> <td align="right"><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{RGB}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>R</mi> <mi>G</mi> <mi>B</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{RGB}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4f16808a4fff4e1d2341cfab5c3b1ab4b5c5504f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:4.858ex; height:2.343ex;" alt="{\displaystyle t_{RGB}}"></span></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{1-(C(1-K)+K),1-(M(1-K)+K),1-(Y(1-K)+K)\}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mn>1</mn> <mo>−</mo> <mo stretchy="false">(</mo> <mi>C</mi> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>+</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>,</mo> <mn>1</mn> <mo>−</mo> <mo stretchy="false">(</mo> <mi>M</mi> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>+</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>,</mo> <mn>1</mn> <mo>−</mo> <mo stretchy="false">(</mo> <mi>Y</mi> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>+</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo fence="false" stretchy="false">}</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{1-(C(1-K)+K),1-(M(1-K)+K),1-(Y(1-K)+K)\}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9d116d7f69406864632566f08e7be89e7c385df6" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:68.618ex; height:2.843ex;" alt="{\displaystyle =\{1-(C(1-K)+K),1-(M(1-K)+K),1-(Y(1-K)+K)\}}"></span> </td></tr> <tr> <td></td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle =\{(1-C)(1-K),(1-M)(1-K),(1-Y)(1-K)\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>C</mi> <mo stretchy="false">)</mo> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>,</mo> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>M</mi> <mo stretchy="false">)</mo> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo>,</mo> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>Y</mi> <mo stretchy="false">)</mo> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>K</mi> <mo stretchy="false">)</mo> <mo fence="false" stretchy="false">}</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle =\{(1-C)(1-K),(1-M)(1-K),(1-Y)(1-K)\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/eed6c2ea93d827632771ef3cebc37c1ed8a6f7ea" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:54.286ex; height:2.843ex;" alt="{\displaystyle =\{(1-C)(1-K),(1-M)(1-K),(1-Y)(1-K)\}\,}"></span> </td></tr> </tbody></table> <div class="mw-heading mw-heading3"><h3 id="Mapatge_de_RGB_i_CMYK">Mapatge de RGB i CMYK</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=6" title="Modifica la secció: Mapatge de RGB i CMYK"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:SubtractiveColorSynthesis_CMYK_2.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/SubtractiveColorSynthesis_CMYK_2.jpg/220px-SubtractiveColorSynthesis_CMYK_2.jpg" decoding="async" width="220" height="362" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/SubtractiveColorSynthesis_CMYK_2.jpg/330px-SubtractiveColorSynthesis_CMYK_2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3c/SubtractiveColorSynthesis_CMYK_2.jpg/440px-SubtractiveColorSynthesis_CMYK_2.jpg 2x" data-file-width="1826" data-file-height="3006" /></a><figcaption>Com es pot apreciar, la imatge superior s'ha obtingut superposant les quatre capes de la part inferior. Observeu que cada una de les imatges inferiors correspon a un color bàsic del model CMYK</figcaption></figure> <p>Es pot mapar un color RGB donat en un dels molts colors CMYK semiequivalents possibles. La millor opció és aquella que fa ús de K el màxim possible, i proporcions restants de CMY el menys possible. Per exemple, #808080 (<a href="/wiki/Color_gris" class="mw-redirect" title="Color gris">gris</a>, la meitat exacta entre blanc i negre) serà mapat a (0,0,0,0.5) i no a (0.5,0.5,0.5,0). </p><p>Conversió RGB → CMY, amb els mateixos vectors de color que abans: </p><p>Conversió: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{RGB}=\{R,G,B\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>R</mi> <mi>G</mi> <mi>B</mi> </mrow> </msub> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mi>R</mi> <mo>,</mo> <mi>G</mi> <mo>,</mo> <mi>B</mi> <mo fence="false" stretchy="false">}</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{RGB}=\{R,G,B\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/48d6f9497658305ac44cdc75d95f4f3fcda6036b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:18.091ex; height:2.843ex;" alt="{\displaystyle t_{RGB}=\{R,G,B\}\,}"></span></dd></dl> <p>es converteix a CMY </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{CMY}=\{C',M',Y'\}=\{1-R,1-G,1-B\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> <mi>M</mi> <mi>Y</mi> </mrow> </msub> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <msup> <mi>C</mi> <mo>′</mo> </msup> <mo>,</mo> <msup> <mi>M</mi> <mo>′</mo> </msup> <mo>,</mo> <msup> <mi>Y</mi> <mo>′</mo> </msup> <mo fence="false" stretchy="false">}</mo> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mn>1</mn> <mo>−</mo> <mi>R</mi> <mo>,</mo> <mn>1</mn> <mo>−</mo> <mi>G</mi> <mo>,</mo> <mn>1</mn> <mo>−</mo> <mi>B</mi> <mo fence="false" stretchy="false">}</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{CMY}=\{C',M',Y'\}=\{1-R,1-G,1-B\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7955e87f70597396d4304c20940e567d98379efb" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:46.285ex; height:3.009ex;" alt="{\displaystyle t_{CMY}=\{C',M',Y'\}=\{1-R,1-G,1-B\}\,}"></span></dd></dl> <p>i aleshores a CMYK: </p> <dl><dd>SI <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \min\{C',M',Y'\}=1\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo movablelimits="true" form="prefix">min</mo> <mo fence="false" stretchy="false">{</mo> <msup> <mi>C</mi> <mo>′</mo> </msup> <mo>,</mo> <msup> <mi>M</mi> <mo>′</mo> </msup> <mo>,</mo> <msup> <mi>Y</mi> <mo>′</mo> </msup> <mo fence="false" stretchy="false">}</mo> <mo>=</mo> <mn>1</mn> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \min\{C',M',Y'\}=1\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/295dbb015c0d0c76f6b27df88f26dd6a24c21d83" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:21.167ex; height:3.009ex;" alt="{\displaystyle \min\{C',M',Y'\}=1\,}"></span></dd> <dd>aleshores <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{CMYK}=\{0,0,0,1\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> <mi>M</mi> <mi>Y</mi> <mi>K</mi> </mrow> </msub> <mo>=</mo> <mo fence="false" stretchy="false">{</mo> <mn>0</mn> <mo>,</mo> <mn>0</mn> <mo>,</mo> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo fence="false" stretchy="false">}</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{CMYK}=\{0,0,0,1\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/5a30eef616e58118036fa74286afa37cb268f770" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.325ex; height:2.843ex;" alt="{\displaystyle t_{CMYK}=\{0,0,0,1\}\,}"></span></dd></dl></dd> <dd>un altre <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle K=\min\{C',M',Y'\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>K</mi> <mo>=</mo> <mo movablelimits="true" form="prefix">min</mo> <mo fence="false" stretchy="false">{</mo> <msup> <mi>C</mi> <mo>′</mo> </msup> <mo>,</mo> <msup> <mi>M</mi> <mo>′</mo> </msup> <mo>,</mo> <msup> <mi>Y</mi> <mo>′</mo> </msup> <mo fence="false" stretchy="false">}</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle K=\min\{C',M',Y'\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/5e2a6313ad09ece93ad66e53582659a32a36ee76" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:22.07ex; height:3.009ex;" alt="{\displaystyle K=\min\{C',M',Y'\}\,}"></span></dd> <dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t_{CMYK}=\left\{{\frac {C'-K}{1-K}},{\frac {M'-K}{1-K}},{\frac {Y'-K}{1-K}},K\right\}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> <mi>M</mi> <mi>Y</mi> <mi>K</mi> </mrow> </msub> <mo>=</mo> <mrow> <mo>{</mo> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <msup> <mi>C</mi> <mo>′</mo> </msup> <mo>−</mo> <mi>K</mi> </mrow> <mrow> <mn>1</mn> <mo>−</mo> <mi>K</mi> </mrow> </mfrac> </mrow> <mo>,</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <msup> <mi>M</mi> <mo>′</mo> </msup> <mo>−</mo> <mi>K</mi> </mrow> <mrow> <mn>1</mn> <mo>−</mo> <mi>K</mi> </mrow> </mfrac> </mrow> <mo>,</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <msup> <mi>Y</mi> <mo>′</mo> </msup> <mo>−</mo> <mi>K</mi> </mrow> <mrow> <mn>1</mn> <mo>−</mo> <mi>K</mi> </mrow> </mfrac> </mrow> <mo>,</mo> <mi>K</mi> </mrow> <mo>}</mo> </mrow> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t_{CMYK}=\left\{{\frac {C'-K}{1-K}},{\frac {M'-K}{1-K}},{\frac {Y'-K}{1-K}},K\right\}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7b8f15cdb28317ac3137ea2f1c4e5cef893416d5" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.505ex; width:44.38ex; height:6.176ex;" alt="{\displaystyle t_{CMYK}=\left\{{\frac {C'-K}{1-K}},{\frac {M'-K}{1-K}},{\frac {Y'-K}{1-K}},K\right\}\,}"></span></dd></dl></dd></dl> <div class="mw-heading mw-heading2"><h2 id="Utilització_en_les_arts_gràfiques"><span id="Utilitzaci.C3.B3_en_les_arts_gr.C3.A0fiques"></span>Utilització en les arts gràfiques</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=7" title="Modifica la secció: Utilització en les arts gràfiques"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>El seu ús generalitzat es dona en el context de les <a href="/wiki/Arts_gr%C3%A0fiques" title="Arts gràfiques">arts gràfiques</a>. Les impremtes <a href="/wiki/%C3%92fset" title="Òfset">òfset</a> imprimeixen, generalment, en aquests quatre colors més tintes planes especials, si es dones el cas (els comunament denominats colors <a href="/wiki/Pantone" title="Pantone">Pantone</a>). És per això que abans d'enviar qualsevol treball a la impremta hem de convertir els colors del document a <b>CMYK</b> perquè els colors d'impressió siguin el més correctes possible. </p> <div class="mw-heading mw-heading2"><h2 id="Referències"><span id="Refer.C3.A8ncies"></span>Referències</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=8" title="Modifica la secció: Referències"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist {{#if: | references-column-count references-column-count-{{{col}}}" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://www.ecured.cu/Modelo_CMYK">Modelo CMYK - EcuRed</a>» (en castellà).  Ecured. [Consulta: 9 desembre 2018].</span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://www.fotonostra.com/grafico/rgb.htm">Modelo de colores RGB, CMYK y sRGB</a>». [Consulta: 16 desembre 2018].</span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://www.blogartesvisuales.net/diseno-grafico/color/modelo-de-color-cmyk/">Módelo de color CMYK</a>» (en espanyol europeu), 05-06-2007. [Consulta: 16 desembre 2018].</span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Vegeu_també"><span id="Vegeu_tamb.C3.A9"></span>Vegeu també</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=9" title="Modifica la secció: Vegeu també"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Model_de_color" title="Model de color">Model de color</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Enllaços_externs"><span id="Enlla.C3.A7os_externs"></span>Enllaços externs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Model_de_color_CMYK&action=edit&section=10" title="Modifica la secció: Enllaços externs"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <style 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