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Amend "contrast ratio" term #4400

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Amend "contrast ratio" term #4400

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5b9d281
Remove smoothing/anti-aliasing note
patrickhlauke May 17, 2025
c80725d
Remove two notes
patrickhlauke May 17, 2025
1bdcf62
Move note about border for text into understanding
patrickhlauke May 17, 2025
c071e54
Tweak 1.4.11 note about anti-aliasing
patrickhlauke May 17, 2025
0b7c816
Move note about border for text into enhanced understanding
patrickhlauke May 17, 2025
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Remove smoothing/anti-aliasing note 
The term now (with 1.4.11) applies to both text and non-text content, but it seems incorrect to refer to specific testing methodology in the normative term rather than in the more specific SCs. 1.4.3 and 1.4.6 understanding (https://www.w3.org/WAI/WCAG22/Understanding/contrast-minimum.html and https://www.w3.org/WAI/WCAG22/Understanding/contrast-enhanced) already have a note about antialiasing, so it's redundant to have here)
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patrickhlauke committed May 17, 2025
commit 5b9d281f2913ae523322dce640e4cc82a6426a4a
7 changes: 1 addition & 6 deletions guidelines/terms/20/contrast-ratio.html
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Expand Up @@ -14,12 +14,7 @@
</ul>

<p class="note">Contrast ratios can range from 1 to 21 (commonly written 1:1 to 21:1).</p>

<p class="note">Because authors do not have control over user settings as to how text is rendered
(for example font smoothing or anti-aliasing), the contrast ratio for text can be
evaluated with anti-aliasing turned off.
</p>


<p class="note">For the purpose of Success Criteria 1.4.3 and 1.4.6, contrast is measured with respect
to the specified background over which the text is rendered in normal usage. If no
background color is specified, then white is assumed.
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