Contrast Checker
Check WCAG contrast between text and background.
Accessibility
The quick brown fox
jumps over the lazy dog — 1234567890.
Smaller helper text sample.
Ratio
19.61:1
AA normal
Pass
AA large
Pass
AAA normal
Pass
AAA large
Pass
How to use Contrast Checker
- Open Contrast Checker. Open the tool page — no account or installation is needed.
- Add your input. Type, paste or upload the content you want to process.
- Adjust the options. Fine-tune the available settings until the preview matches what you need.
- Copy or download. Use the copy or download button to save the result to your device.
Frequently asked questions
Is the Contrast Checker free to use?+
Yes. Contrast Checker is completely free, with no signup, no watermark and no usage limits.
How does the Contrast Checker work?+
Check WCAG contrast between text and background. Everything runs in your browser, so your input is processed on your own device.
Is my data uploaded to a server?+
No. This tool processes your input locally in the browser. Files and text never leave your device unless a tool explicitly states it calls an external API.
Can I use Contrast Checker on mobile?+
Yes. The interface is responsive and works on phones, tablets and desktops in any modern browser.
Where can I find similar color tools?+
Browse the Color Tools category for related utilities, or use the search box to find any tool instantly.