Contrast Checker

Pick a foreground and a background colour. The ratio is checked against all four AA and AAA thresholds.

Foreground (text)

Background

Contrast ratio

21.00:1

Large text means 18pt (24px) and up, or 14pt (18.66px) and bold. AA needs 4.5:1 for normal text and 3:1 for large text. AAA needs 7:1 and 4.5:1.

Preview

The quick brown fox

The quick brown fox jumps over the lazy dog. This is a normal reading size, the one the 4.5:1 threshold protects.