Contrast Checker
Check colour contrast against the WCAG thresholds.
How to use Contrast Checker
- Enter the text colour
- Enter the background
- Read the ratio
About Contrast Checker
Contrast Checker is a free online developer tool that lets you check colour contrast against the WCAG thresholds. It runs entirely in your web browser, so there is nothing to download or install and you never need to create an account.
Simply open the tool, add your content, and get your result in seconds. A live preview lets you check the result before you download it.
Contrast Checker is 100% free with no limits, no watermarks and no sign-up. Your input is processed securely in your session and is never stored on our servers. Popular searches for this tool include Contrast Checker, WCAG Contrast, Color Accessibility Checker.
Features
- ✓100% free with no usage limits
- ✓Works in any browser — nothing to install
- ✓Instant live preview of your result
- ✓Mobile, tablet and desktop friendly
Benefits
- ★Save time with fast, one-click processing
- ★No software, no registration and no email required
- ★Your data stays private — nothing is stored
- ★Completely free, with no hidden costs or watermarks
- ★Use it anywhere, on any device with a browser
Frequently asked questions
Is Contrast Checker free to use?
Yes, Contrast Checker is completely free with no usage limits, no watermarks and no sign-up required.
Do I need to install software or create an account?
No. The tool runs entirely in your web browser — there is nothing to download and no account to create.
Is my data stored or shared?
No. Your input is processed securely in your session and is never stored or shared.
How do I use Contrast Checker?
It takes just a few steps: enter the text colour; enter the background; read the ratio.
Does Contrast Checker work on mobile and Mac/Windows?
Yes. It works in any modern browser on phones, tablets, Windows, macOS and Linux.