Accessibility Color Checker
FreeCheck color combinations for WCAG AA and AAA accessibility compliance
Sample text
The quick brown fox jumps over the lazy dog.
4.47:1
About Accessibility Color Checker
Text that looks fine to you can be unreadable to someone with low vision if the contrast is too weak. Accessibility guidelines put real numbers on this, and meeting them is part of building for everyone. This checker measures the contrast between your text and background colors and tells you whether they pass WCAG AA and AAA standards.
Enter a foreground and background color and the tool calculates the contrast ratio, showing which compliance levels it meets. It's free, runs in your browser, and needs no signup. Instead of guessing whether a color pairing is readable, you get a clear pass or fail against the standards, so you can adjust before it becomes an accessibility problem.
Common uses
- Checking if your text and background meet WCAG AA contrast
- Verifying button or link colors are readable for everyone
- Adjusting a brand palette to pass accessibility standards
- Testing contrast before shipping a website or app design
How to use
- 1
Configure options
Set your preferences using the options panel below.
- 2
Click Generate
Click the process button to generate your result instantly.
- 3
Copy or download
Copy the result to clipboard or download it directly to your device.
Why ToolHub?
- 100% Free — no account needed
- Works in your browser — no software required
- Instant results
- Secure and private
- No data stored
- Simple to use
FAQ
What's the difference between AA and AAA?
AAA requires a higher contrast ratio than AA. Meeting AA is the common standard, while AAA offers enhanced readability.
What contrast ratio do I need to pass?
It depends on text size and level, but the checker shows the ratio and which standards it meets so you know where you stand.
Does larger text have different rules?
Yes. Larger text can pass at a lower contrast ratio than small text, and the standards reflect this.
Can I use Accessibility Color Checker on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.