Success Criterion 1.4.11 "Non-text Contrast" is a Level AA requirement under the "perceivable" principle of WCAG 2.2. EN 301 549 clause 9.1.4.11 maps this criterion for procurement conformance.
Correct: input borders, focus indicators, meaningful icons, and control boundaries hit 3:1 against adjacent colours. Incorrect: a 1.5:1 input border "because it is subtle", or a focus ring that disappears on the brand background. Focus indicators are the silent failure — a barely-visible 1.8:1 ring technically "exists" but fails this criterion.
Engine coverage: manual-only in the current audit tiers — no automated run can certify it.
Last reviewed 2026-11-02 — generated from the engine’s WCAG criterion registry.
Reading up on WCAG 1.4.11? The engine verifies this surface from the perimeter — live on sovereign EU/UK partitions.