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WCAG 2.0 uses the same three levels of conformance (A, AA, AAA) as WCAG 1.0, but has redefined them. The WCAG working group maintains an extensive list of web accessibility techniques and common failure cases for WCAG 2.0. [24] WCAG 2.1 is backwards-compatible with WCAG 2.0, which it extends with a further 17 success criteria.
Web Content Accessibility Guidelines in Japan were established in 2004 as JIS (Japanese Industrial Standards) X 8341–3. JIS X 8341-3 was revised in 2010 as JIS X 8341-3:2010 to encompass WCAG 2.0, and it was revised in 2016 as JIS X 8341-3:2016 to be identical standards with the international standard ISO/IEC 40500:2012.
These color tables should help editors choose accessible backgrounds matching various color schemes. The first table contains WCAG AAA compatible for 14 different hues, plus grey and brown. In each row, the "base color" is the simplest representation of the hue.
The Web Content Accessibility Guidelines 1.0 (known as WCAG) were published as a W3C Recommendation on 5 May 1999. A supporting document, Techniques for Web Content Accessibility Guidelines 1.0 [35] was published as a W3C Note on 6 November 2000. WCAG 1.0 is a set of guidelines for making web content more accessible to persons with disabilities.
Web "content" generally refers to the information in a Web page or Web application, including text, images, forms, and sounds. (More specific definitions are available in the WCAG documents.) [74] The WCAG is separated into three levels of compliance, A, AA and AAA.
The Template:Color contrast conformance gives a "AAA", "AA" or "none" judgment for the level of conformance to WCAG 2.0 of two colors together, in terms of contrast ratio, where the colors can be either RGB #numbers (#56F3BB) or color names (green, darkorange, or NavahoWhite, etc.).
Ensure the contrast of the text with its background reaches at least Web Content Accessibility Guidelines (WCAG) 2.0's AA level, and AAA level when feasible (see WCAG's "Understanding SC 1.4.3: Contrast (Minimum)").
Guidelines on this page are ordered primarily by priority, then difficulty. The priority levels are determined by the Accessibility Success Criteria rankings A, AA, and AAA (in descending order of importance as accessibility considerations) of the World Wide Web Consortium (W3C) Web Content Accessibility Guidelines (WCAG) 2.0.
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