WCAG Contrast Checker

Check WCAG AA & AAA color contrast in real time. Find accessible text/background combos for legible, compliant UI design.

See the exact WCAG contrast ratio between any two colours — instantly know if your text passes AA or AAA accessibility standards.

No login, no setup. Pick a foreground and background colour and watch the ratio update live as you adjust each shade.

KEY FEATURES • Real-time WCAG contrast ratio for any colour pair • Clear AA and AAA pass/fail for normal, large, and UI text • Live text preview at every size, so you see exactly what readers see • One-tap fix — nudge a failing colour to the nearest passing shade • Full palette audit — check every pair in a palette at once • Unlimited saved colour pairs for ongoing projects • Works 100% offline — private by design, no ads, no tracking

HOW IT WORKS

1. Pick your foreground and background colours
2. Read the live contrast ratio and AA/AAA verdict
3. Tap Fix to jump to the nearest passing shade

Full access — including palette audit, unlimited saved pairs, and one-tap fix — unlocks with a subscription. Weekly, yearly, and lifetime options are available, so you can pick what suits your workflow.

Built for designers, developers, and anyone who wants accessible colour choices without the guesswork.

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