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class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ca.wikipedia.org&uselang=ca" class=""><span>Donatius</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Especial:Crea_compte&returnto=Profunditat+de+color" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori" class=""><span>Crea un compte</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Especial:Registre_i_entrada&returnto=Profunditat+de+color" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o" class=""><span>Inicia la 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[n]" accesskey="n"><span>Discussió per aquest IP</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Lloc"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contingut" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" 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-Color_indexat" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Color_indexat"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Color indexat</span> </div> </a> <ul id="toc-Color_indexat-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Color_directe" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Color_directe"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Color directe</span> </div> </a> <button aria-controls="toc-Color_directe-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 Color directe</span> </button> <ul id="toc-Color_directe-sublist" class="vector-toc-list"> <li id="toc-Color_d'alta_resolució_o_HiColor" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Color_d'alta_resolució_o_HiColor"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Color d'alta resolució o <i>HiColor</i></span> </div> </a> <ul id="toc-Color_d'alta_resolució_o_HiColor-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Color_veritable_o_True_Color" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Color_veritable_o_True_Color"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Color veritable o <i>True Color</i></span> </div> </a> <ul id="toc-Color_veritable_o_True_Color-sublist" class="vector-toc-list"> </ul> </li> </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">3</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">4</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">5</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">Profunditat de color</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 36 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-36" 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">36 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%B9%D9%85%D9%82_%D9%84%D9%88%D9%86%D9%8A" title="عمق لوني - àrab" lang="ar" hreflang="ar" data-title="عمق لوني" data-language-autonym="العربية" data-language-local-name="àrab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%94%D1%8A%D0%BB%D0%B1%D0%BE%D1%87%D0%B8%D0%BD%D0%B0_%D0%BD%D0%B0_%D1%86%D0%B2%D0%B5%D1%82%D0%B0" title="Дълбочина на цвета - búlgar" lang="bg" hreflang="bg" data-title="Дълбочина на цвета" data-language-autonym="Български" data-language-local-name="búlgar" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Barevn%C3%A1_hloubka" title="Barevná hloubka - txec" lang="cs" hreflang="cs" data-title="Barevná hloubka" 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/Farvedybde" title="Farvedybde - danès" lang="da" hreflang="da" data-title="Farvedybde" 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/Farbtiefe_(Computergrafik)" title="Farbtiefe (Computergrafik) - alemany" lang="de" hreflang="de" data-title="Farbtiefe (Computergrafik)" 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/%CE%A7%CF%81%CF%89%CE%BC%CE%B1%CF%84%CE%B9%CE%BA%CF%8C_%CE%B2%CE%AC%CE%B8%CE%BF%CF%82" title="Χρωματικό βάθος - grec" lang="el" hreflang="el" data-title="Χρωματικό βάθος" 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/Color_depth" title="Color depth - anglès" lang="en" hreflang="en" data-title="Color depth" data-language-autonym="English" data-language-local-name="anglès" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Profundidad_de_color" title="Profundidad de color - espanyol" lang="es" hreflang="es" data-title="Profundidad de color" data-language-autonym="Español" data-language-local-name="espanyol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B9%D9%85%D9%82_%D8%B1%D9%86%DA%AF" title="عمق رنگ - persa" lang="fa" hreflang="fa" data-title="عمق رنگ" 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/V%C3%A4risyvyys" title="Värisyvyys - finès" lang="fi" hreflang="fi" data-title="Värisyvyys" 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/Profondeur_de_couleur" title="Profondeur de couleur - francès" lang="fr" hreflang="fr" data-title="Profondeur de couleur" data-language-autonym="Français" data-language-local-name="francès" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Sz%C3%ADnm%C3%A9lys%C3%A9g" title="Színmélység - hongarès" lang="hu" hreflang="hu" data-title="Színmélység" data-language-autonym="Magyar" data-language-local-name="hongarès" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kedalaman_warna" title="Kedalaman warna - indonesi" lang="id" hreflang="id" data-title="Kedalaman 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/Litad%C3%BDpt" title="Litadýpt - islandès" lang="is" hreflang="is" data-title="Litadýpt" 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/Profondit%C3%A0_di_colore" title="Profondità di colore - italià" lang="it" hreflang="it" data-title="Profondità di colore" 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/%E8%89%B2%E6%B7%B1%E5%BA%A6" title="色深度 - japonès" lang="ja" hreflang="ja" data-title="色深度" 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-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%A4%E1%83%94%E1%83%A0%E1%83%94%E1%83%91%E1%83%98%E1%83%A1_%E1%83%98%E1%83%9C%E1%83%A4%E1%83%9D%E1%83%A0%E1%83%9B%E1%83%90%E1%83%A2%E1%83%98%E1%83%99%E1%83%A3%E1%83%9A%E1%83%98_%E1%83%99%E1%83%9D%E1%83%93%E1%83%98%E1%83%A0%E1%83%94%E1%83%91%E1%83%90" title="ფერების ინფორმატიკული კოდირება - georgià" lang="ka" hreflang="ka" data-title="ფერების ინფორმატიკული კოდირება" data-language-autonym="ქართული" data-language-local-name="georgià" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%83%89_%EA%B9%8A%EC%9D%B4" title="색 깊이 - coreà" lang="ko" hreflang="ko" data-title="색 깊이" data-language-autonym="한국어" data-language-local-name="coreà" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Kr%C4%81sas_dzi%C4%BCums" title="Krāsas dziļums - letó" lang="lv" hreflang="lv" data-title="Krāsas dziļums" 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/%D0%A2%D3%B1%D1%81_%D0%BA%D0%B5%D0%BB%D0%B3%D1%8B%D0%BB%D1%8B%D0%BA" title="Тӱс келгылык - Eastern Mari" lang="mhr" hreflang="mhr" data-title="Тӱс келгылык" 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-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Kedalaman_warna" title="Kedalaman warna - malai" lang="ms" hreflang="ms" data-title="Kedalaman warna" 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/Kleurendiepte" title="Kleurendiepte - neerlandès" lang="nl" hreflang="nl" data-title="Kleurendiepte" 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/Tonedybde" title="Tonedybde - noruec bokmål" lang="nb" hreflang="nb" data-title="Tonedybde" 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-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/G%C5%82%C4%99bia_koloru" title="Głębia koloru - polonès" lang="pl" hreflang="pl" data-title="Głębia koloru" 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/Profundidade_de_cor" title="Profundidade de cor - portuguès" lang="pt" hreflang="pt" data-title="Profundidade de cor" data-language-autonym="Português" data-language-local-name="portuguès" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%93%D0%BB%D1%83%D0%B1%D0%B8%D0%BD%D0%B0_%D1%86%D0%B2%D0%B5%D1%82%D0%B0" title="Глубина цвета - rus" lang="ru" hreflang="ru" data-title="Глубина цвета" data-language-autonym="Русский" data-language-local-name="rus" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Color_depth" title="Color depth - Simple English" lang="en-simple" hreflang="en-simple" data-title="Color depth" 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-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Farebn%C3%A1_h%C4%BAbka" title="Farebná hĺbka - eslovac" lang="sk" hreflang="sk" data-title="Farebná hĺbka" data-language-autonym="Slovenčina" data-language-local-name="eslovac" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%94%D1%83%D0%B1%D0%B8%D0%BD%D0%B0_%D0%B1%D0%BE%D1%98%D0%B5" title="Дубина боје - serbi" lang="sr" hreflang="sr" data-title="Дубина боје" 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/F%C3%A4rgdjup" title="Färgdjup - suec" lang="sv" hreflang="sv" data-title="Färgdjup" data-language-autonym="Svenska" data-language-local-name="suec" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A8%E0%AE%BF%E0%AE%B1_%E0%AE%85%E0%AE%9F%E0%AE%B0%E0%AF%8D%E0%AE%A4%E0%AF%8D%E0%AE%A4%E0%AE%BF" title="நிற அடர்த்தி - tàmil" lang="ta" hreflang="ta" data-title="நிற அடர்த்தி" data-language-autonym="தமிழ்" data-language-local-name="tàmil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%A5%E0%B8%B6%E0%B8%81%E0%B8%AA%E0%B8%B5" title="ความลึกสี - tai" lang="th" hreflang="th" data-title="ความลึกสี" 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/Renk_derinli%C4%9Fi" title="Renk derinliği - turc" lang="tr" hreflang="tr" data-title="Renk derinliği" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%93%D0%BB%D0%B8%D0%B1%D0%B8%D0%BD%D0%B0_%D0%BA%D0%BE%D0%BB%D1%8C%D0%BE%D1%80%D1%83" title="Глибина кольору - ucraïnès" lang="uk" hreflang="uk" data-title="Глибина кольору" data-language-autonym="Українська" data-language-local-name="ucraïnès" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%89%B2%E5%BD%A9%E6%B7%B1%E5%BA%A6" title="色彩深度 - xinès" lang="zh" hreflang="zh" data-title="色彩深度" 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/%E8%89%B2%E5%BD%A9%E6%B7%B1%E5%BA%A6" title="色彩深度 - cantonès" lang="yue" hreflang="yue" data-title="色彩深度" 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/Q690110#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 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dir="ltr"><figure typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Indexed_palette.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Indexed_palette.svg/150px-Indexed_palette.svg.png" decoding="async" width="150" height="400" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Indexed_palette.svg/225px-Indexed_palette.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Indexed_palette.svg/300px-Indexed_palette.svg.png 2x" data-file-width="150" data-file-height="400" /></a><figcaption>Paleta de colors</figcaption></figure> <p>La <b>profunditat de color</b> o <b>bits per píxel</b> és un concepte dels <a href="/wiki/Gr%C3%A0fics_per_ordinador" class="mw-redirect" title="Gràfics per ordinador">gràfics per ordinador</a> que es refereix a la quantitat de <a href="/wiki/Bit" title="Bit">bits</a> d'informació necessaris per a representar el <a href="/wiki/Color" title="Color">color</a> d'un <a href="/wiki/P%C3%ADxel" title="Píxel">píxel</a> en una <a href="/wiki/Imatge_digital" title="Imatge digital">imatge digital</a> o en un <i><a href="/wiki/Framebuffer" title="Framebuffer">framebuffer</a></i>. A causa de la naturalesa del <a href="/wiki/Codi_binari" title="Codi binari">sistema binari</a> de numeració, una profunditat de bits 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 n}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>n</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle n}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/a601995d55609f2d9f5e233e36fbe9ea26011b3b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.395ex; height:1.676ex;" alt="{\displaystyle n}"></span> implica que cada <a href="/wiki/P%C3%ADxel" title="Píxel">píxel</a> de la imatge pot tenir <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 2^{n}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2^{n}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/8226f30650ee4fe4e640c6d2798127e80e9c160d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.381ex; height:2.343ex;" alt="{\displaystyle 2^{n}}"></span> possibles valors i per tant, representar <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 2^{n}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2^{n}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/8226f30650ee4fe4e640c6d2798127e80e9c160d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.381ex; height:2.343ex;" alt="{\displaystyle 2^{n}}"></span> colors distints. </p><p>A causa de l'acceptació pràcticament universal dels <a href="/wiki/Octet_(informaci%C3%B3)" class="mw-redirect" title="Octet (informació)">octets</a> de 8 bits com a unitats bàsiques d'informació en els dispositius d'emmagatzematge, els valors de profunditat de color solen ser divisors o múltiples de 8, a saber 1, 2, 4, 8, 16, 24 i 32, amb l'excepció de la profunditat de color de 15, usada per certs dispositius gràfics.<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><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> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Color_indexat">Color indexat</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Profunditat_de_color&action=edit&section=1" title="Modifica la secció: Color indexat"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Per a les <i>profunditats de color</i> inferiors o iguals a 8, els valors dels píxels fan referència a tons <a href="/wiki/Model_de_color_RGB" title="Model de color RGB">RGB</a> indexats en una taula, anomenada habitualment <i><a href="/w/index.php?title=Mapa_de_colors&action=edit&redlink=1" class="new" title="Mapa de colors (encara no existeix)">mapa de colors</a></i> o <a href="/wiki/Paleta_(inform%C3%A0tica)" title="Paleta (informàtica)"><i>paleta</i></a>. Els tons en aquesta taula poden definir-se per convenció o bé ser configurables, en funció de l'aplicació que la defineixi. A continuació, es mencionaran algunes profunditats de color en la gamma baixa, així com la quantitat de tons que poden representar en cada píxel i el nom que s'atorga a les imatges o <i>framebuffers</i> que els suporten.<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><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <ul><li>1 <a href="/wiki/Bit" title="Bit">bit</a> per <a href="/wiki/P%C3%ADxel" title="Píxel">píxel</a>: <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 2^{1}=2}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msup> <mo>=</mo> <mn>2</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2^{1}=2}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1a8fa6b2a667bd0f236b70179dbf1fbc9a0accb1" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:6.478ex; height:2.676ex;" alt="{\displaystyle 2^{1}=2}"></span> colors, també anomenat <i>monocrom</i>.</li> <li>2 <a href="/wiki/Bit" title="Bit">bits</a> per <a href="/wiki/P%C3%ADxel" title="Píxel">píxel</a>: <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 2^{2}=4}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>=</mo> <mn>4</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2^{2}=4}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/544566e539538b9b5d5f9106712550b2c80da685" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:6.478ex; height:2.676ex;" alt="{\displaystyle 2^{2}=4}"></span> colors, o <a href="/wiki/Color_Graphics_Adapter" title="Color Graphics Adapter">CGA</a>.</li> <li><a href="/wiki/4_bits" title="4 bits">4 bits</a> per <a href="/wiki/P%C3%ADxel" title="Píxel">píxel</a>: <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 2^{4}=16}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> <mo>=</mo> <mn>16</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2^{4}=16}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/497cd52a6b919afe9294de98282cccc6c74b5fc0" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:7.64ex; height:2.676ex;" alt="{\displaystyle 2^{4}=16}"></span> colors, que és la mínima profunditat acceptada per l'estàndard <a href="/wiki/VGA" class="mw-redirect" title="VGA">VGA</a>.</li> <li><a href="/wiki/8_bits" title="8 bits">8 bits</a> per <a href="/wiki/P%C3%ADxel" title="Píxel">píxel</a>: <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 2^{8}=256}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>8</mn> </mrow> </msup> <mo>=</mo> <mn>256</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2^{8}=256}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e8ce4c9b006679322bda6c0c82fe41a2907e19a7" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:8.803ex; height:2.676ex;" alt="{\displaystyle 2^{8}=256}"></span> colors, també anomenat <i><a href="/wiki/Super_VGA" class="mw-redirect" title="Super VGA">Super VGA</a></i>.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Color_directe">Color directe</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Profunditat_de_color&action=edit&section=2" title="Modifica la secció: Color directe"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Quan els valors de la profunditat de colors augmenten, no és pràctic mantenir una taula o mapa de colors a causa de la progressió exponencial de la quantitat de valors que el píxel pot prendre. En aquests casos, es prefereix codificar dins cada píxel els tres valors d'intensitat lluminosa que defineixen un color qualsevol en el <a href="/wiki/Model_de_color_RGB" title="Model de color RGB">model de color RGB</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Color_d'alta_resolució_o_HiColor"><span id="Color_d.27alta_resoluci.C3.B3_o_HiColor"></span>Color d'alta resolució o <i>HiColor</i></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Profunditat_de_color&action=edit&section=3" title="Modifica la secció: Color d'alta resolució o HiColor"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Els valors de <b>profunditat de color</b> de 15 i 16 bits són anomenats habitualment <i>color d'alta resolució</i> o <i>HiColor</i>. </p> <ul><li>En la profunditat de 15 <span title="bits per píxel">bpp,</span> s'utilitzen 5 bits per a codificar la intensitat del vermell, 5 per al verd i els altres 5 per al blau. Amb una profunditat de 15 bpp es pot representar <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 32\times 32\times 32=32.768}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>32</mn> <mo>×</mo> <mn>32</mn> <mo>×</mo> <mn>32</mn> <mo>=</mo> <mn>32.768</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 32\times 32\times 32=32.768}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/69de40e54a6f553080460618f3ec8a5c0349bcc7" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:22.213ex; height:2.176ex;" alt="{\displaystyle 32\times 32\times 32=32.768}"></span> colors en cada píxel.</li> <li>En la profunditat de 16 bpp, s'utilitzen 5 bits per a codificar la intensitat del <a href="/wiki/Vermell" class="mw-redirect" title="Vermell">vermell</a>, 6 per al verd i els altres 5 per al <a href="/wiki/Blau" title="Blau">blau</a>. La raó d'això és que experimentalment se sap que l'ull humà és més sensible al color <a href="/wiki/Verd" title="Verd">verd</a>, i que pot discriminar més tons que varien lleugerament en la intensitat verda. Amb la profunditat de 16 bpp, és possible representar <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 32\times 64\times 32=65.536}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>32</mn> <mo>×</mo> <mn>64</mn> <mo>×</mo> <mn>32</mn> <mo>=</mo> <mn>65.536</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 32\times 64\times 32=65.536}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7c80a447392926fa28997de23662335610d84f5a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:22.213ex; height:2.176ex;" alt="{\displaystyle 32\times 64\times 32=65.536}"></span> colors en cada píxel. La mida de la imatge dependrà de la profunditat de bit.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Color_veritable_o_True_Color">Color veritable o <i>True Color</i></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Profunditat_de_color&action=edit&section=4" title="Modifica la secció: Color veritable o True Color"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Per a la profunditat de color de 24 bits per píxel, es parla de <i><a href="/wiki/Color_veritable" title="Color veritable">color veritable</a></i> a causa que la policromia s'acosta al que l'<a href="/wiki/Ull" title="Ull">ull</a> humà pot trobar en el món real, i que aquest ull humà es torna incapaç de diferenciar entre un to i un altre, si la diferència es manté en un cert rang mínim. En la profunditat de color de 24 bit per píxel, es dedica un octet enter a representar la intensitat lluminosa de cada un dels tres tons primaris de <a href="/wiki/Vermell" class="mw-redirect" title="Vermell">vermell</a>, <a href="/wiki/Verd" title="Verd">verd</a> i <a href="/wiki/Blau" title="Blau">blau</a>, cosa que permet que cada píxel pugui prendre 2<sup>24</sup> = 256 × 256 × 256 = 16.777.216 colors distints. </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=Profunditat_de_color&action=edit&section=5" 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/Profundidad_de_Bits">Profundidad de Bits - EcuRed</a>» (en castellà). [Consulta: 24 març 2024].</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" id="CITEREFpor2021"><span style="font-variant: small-caps;">por</span>. «<a rel="nofollow" class="external text" href="https://spiegato.com/es/que-es-la-profundidad-del-color">¿Qué es la profundidad del color? - Spiegato</a>» (en espanyol europeu), 25-07-2021. [Consulta: 24 març 2024].</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.photokonnexion.com/definition-colour-depth/">Definition: Colour Depth</a>» (en anglès americà). [Consulta: 28 març 2024].</span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://techterms.com/definition/color_depth">Color Depth Definition</a>». [Consulta: 28 març 2024].</span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFHawthorne2020"><span style="font-variant: small-caps;">Hawthorne</span>, Mel. «<a rel="nofollow" class="external text" href="https://www.technipages.com/what-is-colour-depth-and-how-does-it-affect-image-quality/">What Is Colour Depth and How Does It Affect Image Quality?</a>» (en anglès americà), 22-07-2020. [Consulta: 28 març 2024].</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=Profunditat_de_color&action=edit&section=6" 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_RGB" title="Model de color RGB">Model de color RGB</a></li> <li><a href="/wiki/Percepci%C3%B3_de_la_profunditat" title="Percepció de la profunditat">Percepció de la profunditat</a></li> <li><a href="/wiki/Profunditat_de_camp" title="Profunditat de camp">Profunditat de camp</a></li> <li><a href="/wiki/Profunditat_%C3%B2ptica" title="Profunditat òptica">Profunditat òptica</a></li> <li><a href="/wiki/Senyal_RGB" title="Senyal RGB">Senyal RGB</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=Profunditat_de_color&action=edit&section=7" title="Modifica la secció: Enllaços externs"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r33663753">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9;display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}.mw-parser-output .side-box-center{clear:both;margin:auto}}</style><div class="side-box metadata side-box-right plainlinks"> <div class="side-box-flex"> <div class="side-box-image"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">A <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/P%C3%A0gina_principal?uselang=ca">Wikimedia Commons</a></span> hi ha contingut multimèdia relatiu a: <i><b><a href="https://commons.wikimedia.org/wiki/Category:Color_depth" class="extiw" title="commons:Category:Color depth">Profunditat de color</a></b></i></div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.quesabesde.com/camdig/articulos.asp?articulo=132">Per què serveixen 16 bits per color (o canal) 48 bits en total</a> <style data-mw-deduplicate="TemplateStyles:r33711417">.mw-parser-output .languageicon{font-size:0.95em;color:#555;background-color:inherit}@media screen{html.skin-theme-clientpref-night .mw-parser-output .languageicon{background-color:inherit;color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .languageicon{background-color:inherit;color:white}}</style><span class="languageicon" title="En castellà">(castellà)</span>.</li></ul> <div role="navigation" class="navbox" aria-label="Navbox" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Bases d'informació</th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/GEC" class="mw-redirect" title="GEC">GEC</a> <span class="uid"> (<a rel="nofollow" class="external text" href="https://www.enciclopedia.cat/gran-enciclopedia-catalana/profunditat-de-color">1</a>)</span></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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