Contrast checker

WCAG contrast ratio check

How to use

Choose Text and Background

Pick the two colors.

Read the Ratio

Check the AA and AAA lines.

Apply the Suggestion

If contrast is low, switch to the recommended text color.

Why CodeGrid Tools?

Your files stay private

Processing runs in your browser. Files are not uploaded to our servers.

Fast and simple

No install required; start instantly in the browser.

English & Turkish

Use the site in English or Turkish—locale follows your preference.

Free to start

Core features are free. No credit card for basic use.

About Contrast Checking

With the contrast tool, you can measure text readability for accessible interfaces. Calculations happen on the client side.

Adjust tones with the color converter and test again.

FAQ

What is the difference between WCAG AA and AAA?

AA is the general accessibility baseline, while AAA requires stricter contrast and is not necessary in every case.

What counts as large text?

For bold text or 18pt and above, a 3:1 ratio may be sufficient for AA; check the large-text line in the tool.

Is contrast alone enough for color blindness?

No. Contrast helps, but you should also support meaning with shape, icons, and weight.

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What this tool does

Contrast checking measures WCAG ratios between text and background colors. CodeGrid Tools runs locally; codes stay private and you can iterate quickly. Not a substitute for a full accessibility audit. Turkish UI helps public-sector checks.

Secure. Secure processing

Your data is processed in your browser; content is not sent to the server.