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Conformance level

WCAG’s three tiers of requirements, A, AA, and AAA, where Level AA is what laws and contracts ask for.

Also called
Level A, Level AA, Level AAA

WCAG sorts its success criteria into three levels. The standard describes them as A (lowest), AA, and AAA (highest). Level A removes the most basic barriers, such as images without text alternatives or pages that need a mouse. Level AA adds the requirements most people mean by accessible: enough color contrast, text that resizes, visible focus, captions on live video, and suggestions for fixing form errors. Level AAA goes further, and the W3C does not recommend requiring it for entire sites.

To conform at Level AA, a page must meet every A and AA criterion. That is the level the ADA Title II rule, the HHS rule, Ontario’s AODA, the EU standard, and the UK government all name.

Source

Web Content Accessibility Guidelines (WCAG) 2.2

World Wide Web Consortium (W3C), 2024. Checked .

WCAG
The Web Content Accessibility Guidelines, the international standard for accessible web content that most laws point at.
Success criterion
One testable requirement in WCAG, with a number, a level, and a plain statement of what must be true.
ACR
An Accessibility Conformance Report, a completed VPAT that says how a specific product does against the standard.

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