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Color Contrast Checker
Measure the WCAG contrast ratio between a foreground and background color and see whether it passes AA / AAA for normal and large text — computed locally in your browser.
The quick brown fox
The quick brown fox jumps over the lazy dog
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contrast ratio
| Level | Text | Threshold | Result |
|---|---|---|---|
| AA | Normal | ≥ 4.5:1 | — |
| AA | Large | ≥ 3.0:1 | — |
| AAA | Normal | ≥ 7.0:1 | — |
| AAA | Large | ≥ 4.5:1 | — |
Computed with the WCAG 2.x relative-luminance formula — no network requests.