Contrast Checker
WCAG color contrast accessibility checker
Contrast Ratio
6.70:1
≥ 4.5:1
≥ 3:1 (18pt+ or 14pt+ bold)
≥ 7:1
≥ 4.5:1
Normal text (16px) — The quick brown fox jumps over the lazy dog
Large text (24px bold) — Accessibility matters
About Contrast Checker
Check color contrast ratios for WCAG accessibility compliance.
Contrast Checker is a free design & visual tool on AllYour.Tools, built for fast everyday use directly in your web browser. It is designed for people searching for Contrast Checker online, a free Contrast Checker tool, or a private browser-based alternative that works without installing extra software.
The tool runs locally in your browser whenever possible, so your files, text, and settings stay on your device instead of being uploaded for server-side processing. That makes it useful for quick personal tasks, developer and creator workflows, and privacy-sensitive work where speed and control matter.
How to use Contrast Checker
- Open Contrast Checker in your browser.
- Add the text, file, or settings the tool asks for.
- Review the result on the page and adjust the options if needed.
- Copy, download, or use the result in your workflow.