Color Contrast Checker
Check WCAG AA and AAA contrast ratios for foreground and background colors locally.
Preview text
Readable interfaces are sticky.
Check normal text, large text, and WCAG AA/AAA contrast thresholds.
Contrast
17.85:1
AA normal
Pass
AA large
Pass
AAA normal
Pass
AAA large
Pass
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.