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Design tool

Color Contrast Checker

Check the contrast ratio between foreground and background colors for accessible interface design.

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About the Color Contrast Checker

Calculate the WCAG-style contrast ratio between two sRGB colors and display a text preview with a basic pass/fail indication.

How to use this tool

Choose foreground and background colors, inspect the preview, then click Check contrast. Adjust the colors if the ratio is too low.

Example

A contrast ratio of 4.5:1 is the common WCAG AA target for normal-sized text.

Tips for better results

Automated contrast is only one accessibility check. Verify font size, focus states, semantics and other accessibility requirements separately.

Frequently asked questions

What ratio should normal text meet?

WCAG AA commonly uses 4.5:1.

Does passing guarantee full accessibility?

No, it checks color contrast only.