The value structure of Art Brut is mid-key: quiet, controlled, and cohesive. The palette achieves thermal balance - reds and blues, ochres and greens, each holding the other in check. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. #1F1E1D at 35.5% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. Only 2.3% is devoted to #A78341, yet that small allocation delivers the palette's entire chromatic tension. 65 units of value range underpin the palette's structural clarity: the eye always knows where light falls.