Hubert Robert sits in the centre of the value range, lending the palette a sense of even, sustained light. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The most saturated colour, #B19A71, is reserved to 5.1% of the surface, where it acts as a focal punctuation. From deepest dark to palest light, the palette traverses 64 units of the value scale - a span that creates natural depth. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 4 of Hubert Robert's sequence - a single chapter in a chromatic story told across many works.