Design and CSS Tools

Contrast Checker

Check color contrast for readability and accessible interface decisions.

ToolRuns in the browser

Contrast Checker working example

Check color contrast for readability and accessible interface decisions.

Runs in your browser

Sample input

Example input for Contrast Checker
Contrast Checker design check
value: #0E8C7E, 16px spacing, focus state, or SVG markup
check: contrast, responsive behavior, and code format
Check before running: Test the value on the real background, not only on a neutral preview.

Sample result

Example Contrast Checker result
Design result
- Preview value or CSS snippet
- Accessibility item to review
- Copy-ready token or style note
Next step: copy CSS, compare contrast, or open a related layout tool

The interactive tool loads in this area when JavaScript is enabled.

How to use Contrast Checker

Common uses include Review text contrast, Tune UI colors, Check accessibility references.

Open Contrast Checker and enter the color, size, CSS value, image, or layout detail you want to tune.
Adjust the visual controls while watching the preview or generated CSS. Focus first on Review text contrast.
Generate the result, then check that it fits your design system, viewport, or brand rule. Use the next pass to Check accessibility references.
Copy the CSS, token, image reference, or preview value when it is ready for Tune UI colors.

Useful for

Review text contrast
Tune UI colors
Check accessibility references

Common issues

The preview differs from the real component.

Check inherited font, line-height, box sizing, background, and media query effects.

The style fails an accessibility check.

Increase contrast, keep visible focus, and verify touch target size in the actual component.

How to interpret the result

Use the generated value as a design-system draft and test it in the target viewport before shipping.

Related workflow

Next path: Contrast Checker -> CSS Animation Generator -> CSS Border Radius Generator. Keep the original input nearby so you can compare each result before using it elsewhere.

Privacy and review notes

This tool is designed to process inputs in the browser where the workflow allows it. Photo and AI-assisted outputs are previews or references and should be checked before publishing. Use non-sensitive examples and review the output before sharing or submitting it.