Template:Ensure AAA contrast ratio: Difference between revisions

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<includeonly>{{#if:{{{base|}}}|{{#ifexpr:{{#invoke:Color contrast|ratio|{{{base}}}|{{{other|}}}|error=21}} < 7 OR {{#invoke:Color contrast|ratio|{{{base}}}|black|error=0}} < 7 AND {{#invoke:Color contrast|ratio|{{{base}}}|white|error=0}} < 7|{{{category|}}}}}}}</includeonly><noinclude>
<includeonly>{{#if:{{{base|}}}|{{#ifexpr:{{#invoke:Color contrast|ratio|{{{base}}}|{{{other|}}}|error=21}} < 7 OR {{#invoke:Color contrast|ratio|{{{base}}}|black|error=0}} < 7 AND {{#invoke:Color contrast|ratio|{{{base}}}|white|error=0}} < 7|{{{category|}}}}}}}</includeonly><noinclude>
{{Documentation|content=
{{Documentation}}</noinclude>
This template checks for compliance with [http://www.w3.org/TR/2014/NOTE-WCAG20-TECHS-20140916/G17 WCAG G17], i.e. that a background–foreground colour combination has got a contrast ratio of more than 7:1. It takes two arguments, the <code>base</code> colour value, and the tracking category, <code>category</code>, to place non-compliant transclusions in. A third parameter, <code>other</code>, is optional; the template will by default calculate the contrast ratio against black and white, on the assumption that it is used in conjunction with {{tl|Greater color contrast ratio}}.
 
== Examples ==
* {{#invoke:DemoTemplate|{{PAGENAME}}|base=navy|category=Test}}
* {{#invoke:DemoTemplate|{{PAGENAME}}|base=navy|other=|category=Test}}
* {{#invoke:DemoTemplate|{{PAGENAME}}|base=navy|other=navy|category=Test}}
* {{#invoke:DemoTemplate|{{PAGENAME}}|base=red|category=Test}}
* {{#invoke:DemoTemplate|{{PAGENAME}}|base=#CC5500|category=Test}}
* {{#invoke:DemoTemplate|{{PAGENAME}}|base=asdf|category=Test}}
 
==See also==
*  {{Tlx|Ensure AA contrast ratio}}
 
}}
[[Category:Color conversion templates]]</noinclude>

Latest revision as of 14:49, 3 September 2020

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