Color Contrast Checker

Check WCAG 2.1 accessibility contrast ratios between text and background colors. Ensure your designs meet AA and AAA accessibility standards.

Files never leave your device Always free No server uploads No sign-up No watermarks

Processing happens on your device — nothing is uploaded.

How It Works

Pick your foreground and background

Use the color pickers or type hex/RGB codes to set your text and background colors.

See WCAG compliance live

Contrast ratio, AA pass/fail, and AAA pass/fail update instantly as you change colors.

Adjust until you pass

Fine-tune your colors until you meet WCAG 2.2 AA requirements for accessible, readable design.

Frequently Asked Questions

What is Color Contrast Checker?

Color Contrast Checker is a free, browser-based tool on TitanFile that lets you check WCAG 2.1 accessibility contrast ratios between text and background colors. Ensure your designs meet AA and AAA accessibility standards. Everything runs locally on your device — no files are ever uploaded to any server.

How do I use Color Contrast Checker?

Open the Color Contrast Checker page, add your file or enter your data, adjust any settings, then click the action button. Your result is ready instantly — no sign-up or installation required.

Are my files private?

Yes — all processing happens entirely in your browser using JavaScript. Your files and data never leave your device and are never uploaded to any server. We cannot see your files even if we wanted to.

Does this work offline?

Once the page has loaded, Color Contrast Checker works without an internet connection. You can install it as a PWA to your home screen for instant offline access.

Is there a file size limit?

There is no server-side limit because everything runs locally in your browser. The practical limit is your device's available memory. Most modern devices handle files up to several hundred MB without issue.

Why is this free?

TitanFile is ad-supported and passion-driven. We believe powerful tools should be accessible to everyone. Color Contrast Checker — like every tool on TitanFile — will always be free with no paywalls, watermarks, or hidden fees.