The Evolution Of CSS4 Colors
summary
Color is treated as a measurable, reproducible sensation standardized since 1931 and the talk gives concrete results: measured LCH/Lab values, gamut volumes plotted for sRGB, Display P3 and Rec.2020, and CMYK workflows exported via ICC profiles. Tools include spectral measurement, gamut plotting, device characterization and a JavaScript converter; tests show LCH corresponds better to perceived lightness than HSL. Browser support is partial (Safari nightly and some implementation work; media queries can detect wide‑gamut), and printing relies on ICC profiles for predictable output.
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chapters (23)
- 0:00Intro
- 0:25The Evolution
- 0:49LCH in CSS Color 4
- 2:54Visible spectrum
- 3:11Choroid
- 3:28Retinal cells: rods & cones
- 5:41Cone responses (log scale)
- 6:23Human brain
- 6:39Opponent colors
- 8:22What color is white?
- 10:33Spectral measurement
- 11:15Brightness varies by wavelength
- 11:42Cone response to light
- 13:17Color matching
- 15:42CIE Lightness (L)
- 16:59What about HSL?
- 17:29CIE Hue, Chroma (LCH)
- 19:03Chromaticity diagram
- 24:27CSS3 Color
- 24:42MQ4 hack
- 24:58LCH is device independent
- 27:21CMYK: ICC Color in CSS Color 4
- 27:53Can I use it?
