colour-contrast-analyser
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Description:
Colour contrast checker
Type: Cask  |  Latest Version: 3.5.5@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: accessibility wcag color-contrast testing developer-tools
Install: brew install --cask colour-contrast-analyser
About:
Colour Contrast Analyser (CCA) is a comprehensive tool for evaluating text and UI element contrast ratios against WCAG accessibility standards. It provides instant pass/fail results for AA and AAA levels, featuring a unique eyedropper tool to sample colors directly from any screen element. This ensures digital content meets legal compliance requirements while improving readability for users with visual impairments.
Key Features:
  • Real-time color contrast ratio calculation
  • WCAG 2.1 AA/AAA compliance checking
  • Eyedropper tool for sampling on-screen colors
  • Support for both text and non-text element contrast
  • Pass/fail indicators with detailed results
Use Cases:
  • Web developers verifying site accessibility compliance
  • UX designers validating color palette choices
  • QA testers auditing digital products for WCAG standards
Alternatives:
  • WebAIM Contrast Checker – Web-based tool without native desktop eyedropper functionality
  • Stark – Plugin-based alternative with Figma/Sketch integration but requires subscription
Version History
Detected Version Rev Change Commit
Sep 10, 2025 9:45am 3.5.5 0 VERSION_BUMP c5e1ad38
Aug 5, 2025 2:16pm 3.5.4 0 VERSION_BUMP cbdb05ca