pickLegible
fun pickLegible(candidates: List<Color>, background: Color, fallback: Color, minRatio: Float = MIN_GRAPHICAL_CONTRAST): Color(source)
The first of candidates that clears minRatio against background, or fallback if none does.
Brand palettes are authored for the event's own print/web treatment, not for the app's light and dark surfaces — an event's darkest brand color is invisible in dark mode, its lightest is invisible in light mode. Callers pass their preferred order (usually brand accent, then the rest of the palette) and get back a tint that actually reads.