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 it works
- Open the tool — no signup required.
- Enter or paste your input.
- Adjust the options to your needs.
- Copy or download the result instantly.
Frequently asked questions
Is Contrast Checker really free?+
Yes, entirely free with no limits or signup.
Is my data safe?+
Processing happens in your browser — your input never leaves your device.
Can I use it commercially?+
Yes, you own your output.