Difference between revisions of "Template:Ensure AA contrast ratio/doc"
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imported>Rich Farmbrough |
imported>Zyxw (note module used) |
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{{Documentation subpage}} | {{Documentation subpage}} | ||
<!-- Please place categories where indicated at the bottom of this page and interwikis at Wikidata (see [[Wikipedia:Wikidata]]) --> | <!-- Please place categories where indicated at the bottom of this page and interwikis at Wikidata (see [[Wikipedia:Wikidata]]) --> | ||
| + | {{Lua|Module:Color contrast}} | ||
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==Usage== | ==Usage== | ||
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 4.5:1. 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 {{Tlx|Greater color contrast ratio}}. | 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 4.5:1. 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 {{Tlx|Greater color contrast ratio}}. | ||
Revision as of 21:13, 17 November 2018
| 40px | This is a documentation subpage for Template:Ensure AA contrast ratio. It contains usage information, categories and other content that is not part of the original template page. |
| 30px | This template uses Lua: |
Usage
This template checks for compliance with WCAG G17, i.e. that a background–foreground colour combination has got a contrast ratio of more than 4.5:1. It takes two arguments, the base colour value, and the tracking category, category, to place non-compliant transclusions in. A third parameter, other, 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 {{Greater color contrast ratio}}.
Note: this is compliant with AAA for 18 point or 14 point bold text.
| Rating | Normal text | 18 point or 14 point bold text |
|---|---|---|
| AA | 4.5 | 3 |
| AAA | 7 | 4.5 |
See also
Examples
{{Ensure AA contrast ratio|base=navy|category=Test}}→{{Ensure AA contrast ratio|other=|base=navy|category=Test}}→{{Ensure AA contrast ratio|other=navy|base=navy|category=Test}}→ Test{{Ensure AA contrast ratio|base=red|category=Test}}→{{Ensure AA contrast ratio|base=#CC5500|category=Test}}→{{Ensure AA contrast ratio|base=asdf|category=Test}}→ Test