29033 2015-08-05 22:13:11 +0000 No mapping for the optimum region of <meter> 2015-08-05 22:13:11 +0000 1 1 1 Unclassified HTML WG HTML a11y APIs (editor: Steve Faulkner, Cynthia Shelly) unspecified PC Windows NT NEW P2 normal --- 1 cyns faulkner.steve mike public-html-admin public-html-bugzilla public-html-wg-issue-tracking sideshowbarker+html-a11y-api oldest_to_newest 122475 0 cyns 2015-08-05 22:13:11 +0000 The optimum region is expressed with color in browsers, which means that this feature cannot currently be used without violating WCAG 1.4.1 Use of Color We need a way to express the optimum, sub-optimum, sub-sub-optimum via accessibility APIs. In UIA, we propose to do this by adding the Value pattern in addition to the specified RangeValue pattern. The numberic value of the meter would continue to be stored in RangeValue:Value and the optimum state would be stored in Value:Value as Good, Fair, Poor. WCAG 1.4.1 http://www.w3.org/TR/WCAG20/#visual-audio-contrast-without-color HTML-AAM Meter http://w3c.github.io/aria/html-aam/html-aam.html#el-meter HTML meter element optimum point http://www.w3.org/TR/html51/semantics.html#the-meter-element:the-meter-element-7