The APCA version, to be licensed for use with guidelines: W3/AGWG.
Some useful resources for web accessibility
AI powered WCAG contrast checker that not only detects failures but fixes them for you. Built for developers who want fast, accurate accessibility.
A multi-color contrast checker that lets you test colors across multiple backgrounds and UI contexts — not just for WCAG compliance, but for practical, system-wide accessibility.
Create, preview, and share brand typography & color tokens with a friendly contrast checker. Vite/React + Cloudflare Worker/D1.
A tool to help designers and developers choose accessible text and background color combinations that meet WCAG standards.
Technical responses to common misconceptions about APCA
Draw on your live website. Freehand feedback for AI agents.
40 Claude Code skills for design and productivity workflows. CSS auditing, contrast checking, type scale generation, meeting notes, standup updates, OKR tracking, and more. Every skill has a real executable script. Educational and experimental.
Browser-first design quality scanner. Opens real pages in Playwright, measures actual pixels, catches AI slop patterns. Fixes them too.
WCAG 2.2 color contrast checker with automatic accessible color suggestions.
Free WCAG color contrast checker and accessible palette builder. Verify AA/AAA compliance in real-time, simulate color blindness, get accessible color suggestions, and export palettes to CSS, Tailwind, JSON, SCSS, Swift, Android, and Design Tokens.
A modern, all-in-one suite for color generation, contrast checking, and design inspiration.
A comprehensive WCAG 2.1 color contrast checker that validates text and background color combinations against accessibility standards (AA and AAA levels) and provides suggested fixes for failing contrasts. WCAG contrast checker for text and background colors.
WCAG Contrast Wheel is a lightweight, dependency-free tool that visualizes WCAG contrast accessibility directly on a color wheel.
Identify and save colors from the real world using your camera or any photo. Free Android & iOS color picker app by lapnito.cz s.r.o. Live camera eyedropper with HEX, RGB, HSL, CMYK codes. Palette builder, RAL matching, contrast checker, color harmonies.
Add a description, image, and links to the contrast-checker topic page so that developers can more easily learn about it.
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