Color Contrast for Accessibility
summary
Gives the concrete rule: use a contrast ratio of at least 4.5:1 (ideally 7:1 for small text). Shows how to compute it: convert colors to sRGB, linearize RGB components, weight R/G/B for human luminance, then divide brighter by darker. Points to working tools and code: a REST API and Swift implementation on the GitHub repo, plus slides and a PDF for checking actual color pairs and edge cases tonight.
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chapters (7)
- 0:00Start
- 0:17Color Contrast for Accessibility
- 0:54Qr Codes
- 2:40Color
- 5:39Contrast Ratio
- 9:41Ratio
- 14:33Color Contrast Ratio
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