Nibbler - Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.
Color.review - Colors that look and work great for everyone.
Accessible Brand Colors - A tool to make sure your brand colors are ADA compliant.
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 🎨