Tools and software for designing and testing websites.
Adobe Color Wheel
Deque Color Contrast Analyzer
Website Accessibility Evaluation Report Generator – This tool helps you generate a report according to the Website Accessibility Conformance Evaluation Methodology (WCAG-EM). It does not perform any accessibility checks.
Color Contrast Tester, by Joe Dolson
JAWS Inspect with JISpeak
Tanaguru Contrast Finder