Color.review - Colors that look and work great for everyone.
accessiBe - Making websites accessible to people with disabilities
Sim Daltonism - From the perspective of a color blind person, some colors are impossible to distinguish.
Page Speaker - Modern web accessibility tools for agencies & webmasters
Colorbox.io - Create accessible color systems 🎨
Koa11y - Automatically detect accessibility (a11y) issues on webpages