Accessibility: Accessibility - If Design System
Overview | Workday Canvas Design System
Accessibility - Goldman Sachs Design
Accessibility | Nord Design System
Designing for colorblind access
How your colorblind and colorweak readers see your colors - Datawrapper Blog
Material Design
ColorBrewer: Color Advice for Maps
ColorBrewer Palettes Sketch Freebie
Color Oracle | Color Oracle
Tanaguru Contrast-Finder
Pika • Super High Fives
Contrast Ratio - WCAG Color Contrast Checker
Color and Contrast.com
Accessibility | Sweden
Make your app visually accessible - WWDC20 - Videos - Apple Developer
Visual Design and Accessibility - WWDC19 - Videos - Apple Developer
WCAG checklist for designers.
Design - Accessibility Introduction
Include—Accessibility Annotations
Accessibility guidance | Luna
Home – GOV.UK Design System
Carbon Design System
WebAIM: Contrast and Color Accessibility - Understanding WCAG 2 Contrast and Color Requirements
WhoCanUse
A tool that brings attention and understanding to how color contrast can affect people with different visual impairments.
WebAIM: Contrast Checker
Contrast tools
Color Safe - accessible web color combinations
Accessible color palette builder
Short Note on: Button or Link? - TPGi