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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 two notes 
The note about assuming a particular background is contentious at best.

The note about "it is a failure" seems inappropriate in the normative term definition. A failure of what? This sort of note (if it were actually normatively intended) probably should go in the understanding document for a specific SC.
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patrickhlauke committed May 17, 2025
commit c80725df16bc81004947f71bd4f0629e6d008233
12 changes: 0 additions & 12 deletions guidelines/terms/20/contrast-ratio.html
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Expand Up @@ -15,18 +15,6 @@

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

<p class="note">Background color is the specified color of content over which the text is to be rendered
in normal usage. It is a failure if no background color is specified when the text
color is specified, because the user's default background color is unknown and cannot
be evaluated for sufficient contrast. For the same reason, it is a failure if no text
color is specified when a background color is specified.
</p>

<p class="note">When there is a border around the letter, the border can add contrast and would be
used in calculating the contrast between the letter and its background. A narrow border
around the letter would be used as the letter. A wide border around the letter that
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