Contrast Ratio: (L1 + 0.05) / (L2 + 0.05)
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Lessons in this course
- Hex Colours to RGB and Back: HEX2DEC, MID & DEC2HEXFree
- sRGB to Linear Light: the Piecewise IF with ^2.4 Pro
- Relative Luminance: 0.2126 R + 0.7152 G + 0.0722 B Pro
- Contrast Ratio: (L1 + 0.05) / (L2 + 0.05) Pro
- AA & AAA: Pass/Fail for Normal and Large Text Pro
- Fixing a Palette: Darken Step by Step Until It Passes Pro
- Contrast Matrix for a Brand Palette: Mixed References & Highlighting Pro
- Contrast Report: Pass Rate, Shortfalls & a Chart of Ratios vs Targets Pro