Colleagues: The Accessible Platform Architectures (APA) Working Group requests addition of the following section to the specification css color module level 4 https://www.w3.org/tr/css-color-4/ Accessibility Impact Statement Content authors should be mindful of requirements on color contrast as expressed in WCAG 2.0 Success Criterion 1.4.3: http://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html . See also : https://www.w3.org/WAI/perspectives/contrast.html It is particularly important to be mindful of this requirement when a transparency is present because automated measurement is not available to quantatively and correctly judge whether sufficient contrast is being provided, thus requiring application of informed human judgement on a case by case basis. APA Consensus Documentation This request is a consensus position of APA as documented at: http://lists.w3.org/Archives/Public/public-apa/2016Aug/0008.html Janina Sajka, APA Chair -- Janina Sajka, Phone: +1.443.300.2200 sip:janina@asterisk.rednote.net Email: janina@rednote.net Linux Foundation Fellow Executive Chair, Accessibility Workgroup: http://a11y.org The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI) Chair, Accessible Platform Architectures http://www.w3.org/wai/apaReceived on Wednesday, 3 August 2016 23:51:43 UTC
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