Mid-key values give John Boultbee its characteristic quietness - nothing blazes, nothing disappears. John Boultbee tilts toward cool - blues and silver-greys carry the structural weight. Colours are neither washed out nor blazing; they occupy the productive middle ground of the chroma scale. The saturated accent, #2D210B, registers at 4.9% - sparse enough to feel like a deliberate surprise. Spanning 48 units on the value axis, the palette achieves the balance between tonal flatness and fragmentation. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. This is palette 3 of John Boultbee's sequence - a single chapter in a chromatic story told across many works.