Mid-key values give Gustave Caillebotte its characteristic quietness - nothing blazes, nothing disappears. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The saturated accent, #DAC48E, registers at 3.3% - sparse enough to feel like a deliberate surprise. At 63 units of value range, the palette has the tonal breadth to sustain complex spatial readings. In the context of Gustave Caillebotte's full range of palettes, group 15 represents one movement in an ongoing chromatic dialogue.