DeveloperSpace
Find valid background / foreground color contrast for accessibility (a11y, WCAG)
Color utilities for macOS, iOS, tvOS, and watchOS
Contrast-Finder finds correct color contrasts (background / foreground) for web accessibility (a11y, WCAG, RGAA). https://app.contrast-finder.org
WCAG contrast ratio measurement and scoring
Calculate the WCAG contrast ratio between 2 colors.
Firefox extension to ease use of Asqatasun Contrast-Finder