All tools
Color contrast checker
Data
Measure the contrast ratio between two colours and check it against WCAG AA and AAA thresholds for normal and large text, with a live preview. All in your browser.
Foreground
Background
Almost before we knew it, we had left the ground.
The quick brown fox jumps over the lazy dog.
13.98:1
contrast ratio
| Standard | Threshold | Result |
|---|---|---|
| AA — normal text | 4.5:1 | Pass |
| AA — large text (≥18.66px bold / 24px) | 3:1 | Pass |
| AAA — normal text | 7:1 | Pass |
| AAA — large text | 4.5:1 | Pass |
Contrast ratio per the WCAG 2.1 relative-luminance formula. Ranges from 1:1 (identical) to 21:1 (black on white). Runs entirely in your browser.