Generate colors based on a desired contrast ratio

Advanced color manipulation for iOS.

WhoCanUse is a tool that brings attention and understanding to how color contrast can affect different people with visual impairments.

ac-colors is a reactive JavaScript color library that can freely convert between RGB, HSL, HEX, XYZ, LAB, LCHab, LUV, and LCHuv, as well as handle random color generation and contrast ratio calculation.

The APCA version, to be licensed for use with guidelines: W3/AGWG.

Figma plugin for displaying the contrast level and font size recommendations according to the APCA method

Learn about accessible button contrast then generate your own accessible button color palette

Contrast-Finder finds correct color contrasts (background / foreground) for web accessibility (a11y, WCAG, RGAA). https://app.contrast-finder.org

A Sketch plugin to show a pass/fail type contrast report.

A CLI utility to calculate/verify accessible magic numbers for a color palette.

🌈 Generate the nearest accessible color

🎨 Automated color contrast for text over images

🌈 Generate the nearest accessible color with Sass.

A utility library for calculating luminance, contrast ratio, and appropriate contrast colors to ensure web accessibility.

Generate a consistent color from a string, or generate a random color from a given color. Both accessible, contrast safe, WCAG success criteria 1.4.3 compliant.

A color contrast tool for desktop & web

Allows you to select layers in Sketch and get realtime feedback about the contrast ratio

Checks the color contrast of your color design based on Web Content Accessibility Guidelines (WCAG)

Send it the background color, returns black or white whichever is maximum Lc value

Apple framework for calculating color contrast ratios, WCAG conformance, and high contrast color values (UIColor & NSColor).