Values entered directly into the Color Contrast Checker form
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Color Contrast Checker
Measure color contrast against WCAG AA, AAA, large-text, and UI thresholds.
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No uploadsYour files stay on this device.
Local engineYour browser does the work.
Auto cleanupTemporary memory is released.
About this tool
Use color contrast checker without uploading files
Measure color contrast against WCAG AA, AAA, large-text, and UI thresholds. Color Contrast Checker runs in the current browser session, giving you a direct result without sending the source to a Filemazing processing server.
Processing takes place in your browser tab. Temporary working data is released when you leave or reload the page.
Three steps
- Provide the source values or files for Color Contrast Checker.
- Run the local inspection and review every reported field or difference.
- Copy the findings or use them to decide the next processing step.
Useful for
Common check contrast tasks
- Using check contrast without an upload queue
- Building consistent interface styles
- Checking design calculations
Practical details
What to know before you start
An on-screen check contrast report
- Browser rendering can vary slightly across operating systems and display settings.
- Test generated CSS in the actual layout and supported browser range.
- Review the Color Contrast Checker result before using it in an important workflow.