Top seven free color contrast checkers & analyzers

Here are seven great free tools that help you measure color contrasts and create beautiful, accessible color schemes that fulfill the contrast requirements in the Web Content Accessibility Guidelines (WCAG).

Crayons of different colors, photo.

1. Contrast Ratio

Contrast Ratio

Perfect if you just want a quick and easy contrast measurement.

  • Measure contrast quickly in this web app
  • Very intuitive to use
  • Open source if you want to contribute

Screenshot of Contrast Ratio

2. Tanaguru Contrast Finder

Tanaguru Contrast Finder

Perfect if you want to find a new accessible color combination if your combination fails.

  • Web app that measures contrasts
  • Suggests alternative colors if your combination fails
  • Open source if you want to contribute

Screenshot of Tanaguru Contrast Finder

3. Colour Contrast Analyser – by The Paciello Group

Colour Contrast Analyser

Perfect if you’re measuring contrasts a lot.

  • Desktop application for Mac and PC
  • Analyze any colors appearing anywhere on your screen with the “Colour Picker”
  • Shows how contrast varies with different types of color blindness

Screenshot of Colour Contrast Analyser

4. Color Tool at – by Google

Color Tool (

Perfect if you want to create a complete color palette.

  • Web app created and curated by Google
  • Create an accessible color palette from scratch
  • Choose a text color and the tool shows the minimum opacity needed to fulfill contrast requirement

Screenshot of’s Color Tool

5. Accessibility Developer Tools – by Google

Accessibility Developer Tools (Chrome Store)

Perfect if you’re already using the Developer Tools in Chrome.

  • Chrome plugin that adds a layer to the developer tools
  • Shows color suggestions and lets you view them live on your site
  • Also adds an “Accessibility Audit” that let’s you find other accessibility issues than color

Screenshot of Accessibility Developer Tools

6. Color Contrast – iOS app by UserLight

Color Contrast at App Store

Perfect if you prefer working on iOS devices.

  • App for iOS devices
  • Test colors of apps, websites or screenshots
  • Available in iOS Control Center (swipe up from bottom of screen) for quick live testing

Screenshot of Color Contrast iOS app

7. Android Accessibility Scanner – Android app by Google

Android Accessibility Scanner at Google Play

Great if you work with Android apps.

  • Scan apps with your Android device
  • Points out other accessibility issues as well as contrasts
  • Created and curated by Google.

Screenshot of Android Accessibility Scanner

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