Color Contrast Checker
Check WCAG contrast ratios for text and background colors in your browser.
Color contrast workspace
Check text and background colors against WCAG contrast levels.
Foreground
Background
Preview
Preview text
Readable interfaces are sticky.
Check normal text, large text, and WCAG AA/AAA contrast thresholds.
Output
AA normal text passes at 17.85:1.
Contrast 17.85:1AA normalPassAA large PassAAA normal Pass
Files are processed in your browser. No data is uploaded.
Questions
Which contrast rules does this check?
It checks WCAG AA and AAA thresholds for normal text and large text.
Can I use short hex colors?
Yes. Short colors like #fff are normalized to full six-digit hex values.
Does Utilumo upload my input?
No. This tool is designed for local browser processing and does not send your input to a server.
Do I need an account?
No. Utilumo tools are built to work without accounts or sign-in.