Support RGBlind
Help us keep color blindness tools free and accessible for everyone
Why Your Support Matters
RGBlind provides free, professional-grade color blindness tools used by designers, developers, and researchers worldwide. We maintain simulators, Ishihara tests, contrast checkers, and accessibility tools — all without paywalls.
Your support goes directly toward server costs, new features, and keeping everything free for the color vision deficiency community.
What Your Support Funds
Tool Development
New features, better algorithms, and improved accuracy across all simulators
Free Access
Keeping every tool free so anyone can test for color accessibility
Server & Hosting
Fast, reliable hosting so tools load instantly for millions of users
Buy Us a Coffee on Ko-fi
Quick, easy, and secure. Every coffee helps us build better accessibility tools.
Support on Ko-fiRGBlind is an independent project focused on improving accessibility for people with color vision deficiency. Your contribution directly supports maintenance, updates, and new tools that help millions of people.