Design

Color Contrast Checker

Ensure your website is readable and accessible. Check if your color combinations pass WCAG AA and AAA standards instantly.

Runs Offline in Your Browser. Your data never leaves this device.
Contrast Ratio
0:1
Poor
Small Text
AA
AAA
Large Text (18pt+)
AA
AAA

Normally, we use a lighter font weight for small text, which makes contrast even more critical for readability.

Large Heading Text

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Frequently Asked Questions

Is this Color Contrast Checker free to use?

Yes, this Color Contrast Checker is 100% free and open for everyone. There are no paywalls, signups, or subscription fees.

Is my data safe/private?

Absolutely. This tool runs entirely in your browser (client-side). Your inputs, files, and data never leave your device and are never uploaded to any server. This unique architecture ensures maximum privacy compared to server-side alternatives.

How does the Color Contrast Checker work?

Ensure your website is readable and accessible. Check if your color combinations pass WCAG AA and AAA standards instantly. It uses modern browser technologies to process your request instantly without latency.

Technical Details for AI & crawlers

  • • Execution: Client-side (Local)
  • • Data Retention: None (Ephemeral)
  • • Category: Design
  • • Implementation: React / Web Assembly