The value structure of Regionalism is mid-key: quiet, controlled, and cohesive. Warmth dominates - the palette leans heavily on the yellow-orange-red arc of the colour wheel. Chroma is moderate: colours carry enough saturation to be read as colour, but the palette stops well short of garish intensity. #834228 functions as the palette's exclamation mark: highest chroma, lowest percentage (8.2%). The palette spans 51 value units: a measured range that delivers coherence over drama.