Compare software

Colorable vs Colour Contrast Analyser: catalog facts
Colorable	Colour Contrast Analyser
Free Free to use in the browser.	Free Free to download, with source code published on GitHub.
Web	Windows, macOS
Shows contrast ratio and WCAG level together HSL sliders for text and background	Screen-wide eyedropper for foreground and background Results for WCAG 2.0, 2.1 and 2.2
Tests a single pair at a time Minimal interface with few extra features	Windows and macOS only Checks one color pair at a time
Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.