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Contrast Checker

Colour

Check the contrast ratio between two colours against WCAG 2.1 AA and AAA — and get the nearest colour that passes.

Runs in your browser•Zero cloud uploads / Files stay on device•No account required
Colours

Large text — 24px bold

Normal text — 16px. The quick brown fox jumps over the lazy dog.

Optimized For Platforms
designdeveloperbrand

How it works

1Set your text colour and your background colour.
2Check the live preview — both text sizes are shown, because AA passes at a lower ratio for large text.
3Read the four rows: AA needs 4.5:1 for normal text and 3:1 for large; AAA needs 7:1 and 4.5:1.
4If it fails, take the suggested colour — it keeps your hue and saturation and only moves lightness.

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