WCAG levels (A, AA, AAA)

Every WCAG success criterion has a conformance level that indicates how essential it is:

• Level A - the minimum. Failing these makes content unusable for some people.
• Level AA - the widely required standard. Most laws, regulations, and contracts that reference WCAG require Level AA, which includes everything in Level A.
• Level AAA - the strictest level. Valuable where achievable, but not expected across an entire website.

When someone says a site must "meet WCAG 2.2 AA", they mean it should satisfy every Level A and Level AA criterion in WCAG version 2.2. Silktide lets you filter accessibility results by level so you can focus on the bar that applies to you.

Learn more

• Understanding Conformance - how the W3C defines levels and conformance
• WCAG