Artwork palette theming

Palette extraction gives a handful of swatches per image (vibrant, muted, dominant, and light/dark variants). Choosing between them decides whether a screen looks designed or broken, and the right choice differs between a small accent and the page behind the text.

Accent versus background

An accent — a section tint, a chip, a stripe, a shadow colour — wants a vivid swatch, and a priority walk so something is always returned: