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Vérificateur de contraste des couleurs

Utilitaires pour développeurs

Mesurez les ratios de contraste WCAG et vérifiez si le texte respecte AA et AAA pour texte normal et grand.

Comment utiliser

Check a pair of colors

Pick a foreground and background color. The tool shows the contrast ratio and pass or fail badges for each WCAG level.

  1. Choose the text color.
  2. Choose the background color.
  3. Aim for at least 4.5:1 for normal text.

WCAG thresholds

Normal text needs 4.5:1 for AA and 7:1 for AAA. Large text (18pt or 14pt bold) needs 3:1 for AA and 4.5:1 for AAA.

Questions fréquentes

What counts as large text?

WCAG defines large text as at least 18pt (24px) or 14pt (18.66px) when bold.

Is a higher ratio better?

Yes. A ratio of 21:1 is the maximum, achieved by black text on a white background.