CONTENT AND IMAGE TOOLS
Color Contrast Checker
Enter text and background colors to calculate contrast ratio and accessibility pass levels.
Use with image and design tools
Enter #RGB or #RRGGBB colors and check WCAG contrast.
Contrast results
AA normal: -
AAA normal: -
AA large: -
AAA large: -
Color preview
Contrast is calculated locally using WCAG relative luminance and contrast ratio formulas. Color values are not uploaded.
How it works
Color Contrast Checker uses the values you enter to produce a clear result directly in your browser. Inputs are designed to be easy to review before you copy, print, or use the result.
Example
Open the tool, enter a realistic sample value, review the output, and adjust the fields until the result matches your workflow.
Frequently Asked Questions
Is this tool free to use?
Yes. You can use this tool in your browser without creating an account.
Do I need to install anything?
No. The tool runs online in a modern web browser.
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