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	<title>Module:Color contrast/doc - Revision history</title>
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	<updated>2026-04-04T17:45:20Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.limswiki.org/index.php?title=Module:Color_contrast/doc&amp;diff=23977&amp;oldid=prev</id>
		<title>Admin: Created as needed.</title>
		<link rel="alternate" type="text/html" href="https://www.limswiki.org/index.php?title=Module:Color_contrast/doc&amp;diff=23977&amp;oldid=prev"/>
		<updated>2016-02-16T18:04:09Z</updated>

		<summary type="html">&lt;p&gt;Created as needed.&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&lt;br /&gt;
&amp;lt;!-- Categories go at the bottom of this page and interwikis go in Wikidata. --&amp;gt;&lt;br /&gt;
&lt;br /&gt;
This module is used primarily by &lt;br /&gt;
: {{tl|Color contrast ratio}}&lt;br /&gt;
: {{tl|ColorToLum}} / {{tl|RGBColorToLum}}&lt;br /&gt;
: {{tl|Color contrast conformance}}&lt;br /&gt;
: {{tl|Ensure AAA contrast ratio}}&lt;br /&gt;
: {{tl|Greater color contrast ratio}}&lt;br /&gt;
It is also used for tracking within&lt;br /&gt;
: [[Module:Navbox]]&lt;br /&gt;
: [[Module:Episode list]]&lt;br /&gt;
and for documentation in&lt;br /&gt;
: [[Module:College color]]&lt;br /&gt;
&lt;br /&gt;
== Usage ==&lt;br /&gt;
To use this module, you may use one of the above listed templates or invoke the module directly&lt;br /&gt;
&lt;br /&gt;
To compute relative luminescence&lt;br /&gt;
: &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{ColorToLum|color}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt; or &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{#invoke:Color contrast|lum|color}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt;&lt;br /&gt;
To compute a contrast ratio between two colors&lt;br /&gt;
: &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{Color contrast ratio|color1|color2|error=?}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt; or &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{#invoke:Color contrast|ratio|color1|color2|error=?}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt;&lt;br /&gt;
To determine which of two colors (color2a and color2b) has the greater contrast ratio with a particular color (color1)&lt;br /&gt;
: &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{Greater color contrast ratio|color1|color2a|color2b}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt; or &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{#invoke:Color contrast|greatercontrast|color1|color2a|color2b}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt;&lt;br /&gt;
To compute the contrast ratio between the background and text colors specified in a css style string&lt;br /&gt;
: &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{#invoke:Color contrast|styleratio|css style statement string|default background color|default text color}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&amp;lt;includeonly&amp;gt;{{#ifeq:{{SUBPAGENAME}}|sandbox||&lt;br /&gt;
&amp;lt;!-- Categories go here and interwikis go in Wikidata. --&amp;gt;&lt;br /&gt;
&lt;br /&gt;
}}&amp;lt;/includeonly&amp;gt;&lt;/div&gt;</summary>
		<author><name>Admin</name></author>
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