accessibility · free Companion App · local in this browser
Color Contrast Quick Check
Compute WCAG contrast ratio between two hex colors and flag AA/AAA pass/fail.
Privacy: This App does not send or save your entries. Do not enter passwords, codes, full account numbers, or private identifiers.
Enter your numbers
Enter only the details needed for this task. Check them against the original source.
Your result
Your result will appear here.
Engine self-test
Running golden cases…
Source notes
- W3C Web Accessibility Initiative — Understanding Contrast (Minimum)
WCAG 2.2 requires 4.5:1 contrast for normal text (AA) and 7:1 (AAA), with 3:1 for large text.
Reviewed 2026-10-10. Contrast is one of many accessibility requirements; it does not guarantee legibility on its own.
What this App does not do
This computes from hex values you enter. It does not scan a page for you.
This free App has no paid features. It does not contact an agency, employer, bank, seller, provider, or other person.