AccessibilityDesign

IBM Accessibility Quick Guidance

http://w3-03.ibm.com/able/devtest/quick/

Carbon Design System

http://carbondesignsystem.com

Color Contrast Checker by Mari Johannessen

https://marijohannessen.github.io/color-contrast-checker/

W3C Contrast (Minimum): Understanding SC 1.4.3

https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html

Color Contrast Analyzer

http://www.colorsontheweb.com/Color-Tools/Color-Contrast-Analyzer

Sheila Zinck

https://www.ibm.com/blogs/age-and-ability/author/zincks/