The warm autumn colour palette is built from rich, earthy shades at full warmth: rust, ochre, olive, brick, bronze and pine. These are natural pigment colours, warm and slightly muted rather than bright, sitting at the maximum warmth score of 1.00 with a chroma of -0.70 that keeps them earthy.
Colouring in this season is golden and rich: skin with a golden or bronze cast, hair from auburn through copper to warm chestnut, and eyes in warm hazel, amber or golden brown. Chroma sits at -0.70, meaning colours are muted rather than clear. That is the axis separating it from Warm Spring, which shares the identical temperature but needs bright, fresh colour. Same warmth, opposite brightness. The same season is written as the warm autumn color palette in American spelling, and autumn is called fall in the United States, so warm fall and warm autumn describe this palette too.
