~/talk

The Computer Science Behind Colour

on YouTube 54m
Talkat NDC London 2023 · 2023-01-23..01-27· [web-platform, design-collaboration]

speaker

name:Hayley Stewart
links:none on file

resources

video:https://youtu.be/aEA-iPHIt24
slides:none on file

summary

Demos mix paint (blue+yellow→green, subtractive) and flashlights (red+green→yellow, additive) to show why screens use RGB = red green blue. Explains eye hardware: three cone types, ~6–7M cones vs ~120M rods, and device gamuts (sRGB vs Display P3). Shows how hex and CSS map to binary: 8 bits per channel → 24‑bit (true) color = 16.7 million colors. Covers web history (X11 names, web‑safe 216, CSS named colors) and why screens still vary.

AI-written summary · about

chapters (9)

  1. 0:00Introduction
  2. 6:18Color mixing basics
  3. 13:06Physics of light and perception
  4. 25:30Light vs paint mixing
  5. 28:21How screens display color
  6. 31:51RGB and hex math
  7. 41:01Named colors on the web
  8. 46:25CMYK and Pantone models
  9. 51:27Why color is complicated

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