William Powell Frith keeps values measured and balanced, a hallmark of tonal restraint. Neither warm nor cool has the upper hand here; the equilibrium between the two generates the palette's visual energy. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The saturated accent, #443F1B, registers at 6.8% - sparse enough to feel like a deliberate surprise. The value range of 52 units sits in the comfortable middle: enough depth, enough light, neither extreme. Palette 4 sits within the larger chromatic argument that William Powell Frith's complete body of work advances.