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Re: [csswg-drafts] [css-color-4] system colors when NOT forced-colors:active (#4883)

From: BillGoldstein via GitHub <sysbot+gh@w3.org>
Date: Wed, 25 Mar 2020 16:01:54 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-603926178-1585152113-sysbot+gh@w3.org>
I agree with AmeliaBR about the WCAG AA 4.5:1 contrast ratio requirement for legible pairs...as default.

Later, when implementing <https://drafts.csswg.org/mediaqueries-5/#prefers-contrast>:

when @prefers-contrast:high (or "increased") applies, use WCAG AAA 7:1 contrast ratio,
when @prefers-contrast:no-preference, keep using the WCAG AA 4.5:1 contrast ratio,
when @prefers-contrast:low applies, use WCAG's 3:1 minimum contrast ratio.
@prefers-contrast "extremely high" could use maximum possible contrast.


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Received on Wednesday, 25 March 2020 16:01:57 UTC

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