Contrast checker

Check text and background contrast with a live sample.

Ready when you areLOCAL PROCESSING

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⌁ Your inputs stay in this browser. Download your work before leaving.

MAKE THE MOST OF IT

How to use contrast checker

Choose foreground and background HEX colors to see their contrast ratio.

Things worth knowing

Uses the WCAG 2.x contrast formula. AA thresholds are 4.5:1 for normal text and 3:1 for large text. This checks color contrast only, not overall accessibility.

Is my input saved or uploaded?

Your input is processed locally and is not saved by this site. Reloading or leaving the page clears your work. Copy or download anything you want to keep. Only saved and recent tool IDs are stored on this device.

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