Category: Developer tools
Color Contrast Checker
Check WCAG contrast between foreground and background colors
Calculate WCAG contrast ratio for two colors locally in your browser. No color data is uploaded.
LocalTools contrast preview
Everything on this page is processed in your browser. Nothing is uploaded.
What this tool does
Choose foreground and background colors to preview readability and check AA or AAA contrast thresholds on your device.
How to use it
- Enter the content in the tool panel.
- Adjust the local options if needed.
- Copy or read the result when it is ready.
Privacy
This tool runs entirely in your browser. Your input is never uploaded, stored or shared — closing the tab removes it.
Frequently asked questions
- Is anything uploaded?
- No. The input and result are processed in your browser.
- Does it need an account?
- No. The tool runs directly on the page.
- Can I use private data?
- Yes. The content stays on your device unless you copy it elsewhere.