WCAG Compliance Levels Explained: A, AA, and AAA (8 minute read) (opens in new tab)  ♿Accessibility  3 articles covering this post

WCAG defines three conformance levels — A, AA, and AAA — each building on the previous, with Level AA being the standard most organizations are expected to meet. Although WCAG itself is not a law, Level AA is widely treated as the legal benchmark, with US ADA enforcement and EU directives commonly referencing WCAG 2.1 or 2.2 at that level. Level AAA, the most rigorous tier, is generally treated as an aspirational target applied selectively rather than a universal requirement.