SiteLearning & Craft · Color theory
Article explaining why HSB beats hex for reasoning about UI colour, with rules for building consistent palettes.
Why it’s a gem
Turns colour picking from taste into arithmetic you can teach a junior
Free chapter preview explaining how to build a UI palette with defined shade ramps rather than lighten/darken functions.
Technical note defining colour-blind-safe qualitative, sequential and diverging palettes, with values and usage rules.
Framework for choosing and applying UI colour: neutrals, one accent, saturation ranges and when to break the rules.
Stripe engineering post on building a colour system that guarantees contrast ratios while preserving brand hue relationships.
Long essay deriving an algorithm for generating accessible, perceptually even colour palettes, with interactive demos.