Color Tools

Color Contrast Checker

Color Contrast Checker — check the WCAG contrast ratio between two colors. It works entirely in your browser, with nothing uploaded to any server.

Client-sideRuns entirely in your browser — your data never leaves your device.

Color Contrast Checker is a browser-based web developer tool on WebDevToolsBase. Color Contrast Checker — check the WCAG contrast ratio between two colors. It works entirely in your browser, with nothing uploaded to any server. To use it, paste your input and view the result directly in your browser — no signup and nothing to install.

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Color Contrast Checker is a free Color Tools utility that runs entirely in your browser — nothing you enter is uploaded.

Preview
WCAG result


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How to use Color Contrast Checker

  
    
      
  1. Drop your color value into the field at the top of Color Contrast Checker.
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  2. Adjust the Text color, Background options to match what you need.
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  3. Watch the output update instantly while you adjust the color value.
    4. 
      
  4. Use Copy to keep or reuse the result.
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About this tool

  
Color Contrast Checker is a static, client-side tool with no backend. Color Contrast Checker works with colour values in your browser, converting and previewing formats like HEX, RGB and HSL.

  
Values update live so you can copy the format you need. Your input never leaves the page, and no account or install is required.

  
Frequently asked questions

  

      
How do I use Color Contrast Checker?
Use Color Contrast Checker to check your input without installing anything using the Text color, Background controls; everything happens client-side.

      
Does Color Contrast Checker cost anything?
No — Color Contrast Checker is completely free, with no sign-up and no hidden limits.

      
Is my input private in Color Contrast Checker?
Yes — your input never leaves your device; Color Contrast Checker does all the work in your browser.

      
Which color formats does Color Contrast Checker convert between?
Color Contrast Checker converts between the common web color formats locally, so you can copy whichever your project uses.

      
Can I use Color Contrast Checker without a connection?
Yes — after the first load Color Contrast Checker runs entirely offline.

  

  
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