Contrast checker
Compare two solid colors and calculate their contrast ratio. Check WCAG AA and AAA thresholds for normal and large text.
Features
- Calculate contrast between two colors.
- Report AA and AAA thresholds for normal text.
- Check the separate thresholds for large text.
How to use this tool
- Choose the text and background colors.
- Run the contrast check.
- Review the ratio and adjust the colors if needed.
Good to know
This tool is free without sign-up, with unlimited processing and exports within the displayed input limits.
- This checks solid color pairs, not an entire page. Transparency, images and gradients require evaluating the actual rendered background.
Privacy and local processing
This tool processes your input in your browser. Source files and text are not uploaded to a FormatOwl processing server. Advanced-tool access and trial balances are checked online using tool IDs, file types, sizes and page counts. Free tools do not require account authorization. Save the results you need before leaving or refreshing the page.
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