Claude Arnulphy sits in the centre of the value range, lending the palette a sense of even, sustained light. 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. The most saturated colour, #B12807, is reserved to 4.0% of the surface, where it acts as a focal punctuation. At 64 units of value range, the palette has the tonal breadth to sustain complex spatial readings. This is the light Claude Arnulphy preferred, made measurable.