Use Contrast Check online for free
Check WCAG contrast ratios before shipping a color combination. The tool runs directly in your browser, so you can finish a small task without installing another app or opening a new account.
How to use Contrast Check
- Add the file or text you want to process.
- Choose the available settings for your result.
- Run the tool, then copy or download the output.
Is my data uploaded?
No. Processing happens inside your current browser tab. TinyTask Lab records only anonymous product events such as page view, tool start, success, download, upgrade click, and error. Inputs, file contents, clipboard contents, filenames, URLs, and stable personal identifiers are never included.
Does Contrast Check work on mobile?
Yes. The interface adapts to modern phone, tablet, and desktop browsers.