Vesper Colors

Vesper Colors is a free color contrast checker for macOS, iOS, and the web. Enter any foreground and background color pair and get an instant contrast ratio with WCAG 2.2 AA and AAA pass/fail results. No account, no paywall, no limits.

Available on

• macOS - menu bar app, download from vesperapps.com/colors
• iOS - free on the App Store
• Web - use directly at vesperapps.com/colors
• Chrome - color-collecting extension, install from the Chrome Web Store
• Color Audit - scan a whole site's colors for near-duplicates and contrast failures at vesperapps.com/colors/color-audit

In this section

• Overview - what Vesper Colors does and how to get started
• Checking Color Contrast - entering colors and reading your results
• Using the Color Picker - the HSV picker, hue slider, and hex input
• Preview Tab - seeing your pair applied to real UI components
• Color Blindness Simulation - previewing your pair across five vision types
• Sharing Color Pairs - generating and sharing a link to your exact pair
• WCAG 2.2 Thresholds - contrast ratio requirements explained
• Release Notes - what has changed in each version
• Vesper Colors for Mac - the macOS menu bar app
• Vesper Colors for Chrome - collect a site's real colors into a palette
• Color Audit - scan a site's colors for near-duplicates and contrast failures