Resources

• Accessibility Guidelines Checklist by Vox Media
• accesslint.js keep accessibility errors in check

Tools

• Color Oracle, Color Oracle is a free color blindness simulator for Window, Mac and Linux. It takes the guesswork out of designing for color blindness by showing you in real time what people with common color vision impairments will see.
• Stark, the color-blind simulator and contrast checker for Sketch. Design with accessibility in mind.