https://chromewebstore.google.com/detail/color-contrast-analyzer/dagdlcijhfbmgkjokkjicnnfimlebcll?hl=en-US
Color Contrast Analyzer - Chrome Web Store
Analyze a web page or portion of a web page for conformance with WCAG 2.0 Color Contrast requirements.
color contrast analyzerchromewebstore
https://www.section508.gov/training/web-software/andi-training-videos/color-contrast-analyzer/
Module 14: Color Contrast Analyzer | Section508.gov
color contrast analyzermodule 14