Color Contrast Checker
Check text and background color contrast against WCAG AA and AAA accessibility standards with a live preview. Free contrast checker.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
Large heading text
Normal body text. The quick brown fox jumps over the lazy dog. Can everyone read this comfortably?
Contrast ratio
16.74:1
AA normal text (4.5)
✅ Pass
AA large text (3)
✅ Pass
AAA normal (7)
✅ Pass
AAA large (4.5)
✅ Pass
How to use Color Contrast Checker
- 1Open Color Contrast Checker — it works right on this page.
- 2Use the controls above.
- 3Copy or download the result. No sign up needed.
Questions
Is Color Contrast Checker free?
Yes. Color Contrast Checker is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Color Contrast Checker work on my phone?
Yes. Color Contrast Checker works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.