Readable colour combinations
Contrast is the single biggest factor in whether text is legible. This checker measures the ratio between your text and background colours using the official WCAG formula and tells you, at a glance, whether it meets AA and AAA for both normal and large text — with a live preview so you can see the result.
Accessibility, checked instantly
Adjust either colour and every verdict updates immediately, so you can nudge a shade until it passes rather than guessing. It all runs on your device.