Mid-key values give Vincent van Gogh its characteristic quietness - nothing blazes, nothing disappears. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Saturation is measured and controlled, giving the palette presence without visual aggression. The most saturated colour, #BDA947, is reserved to 7.1% of the surface, where it acts as a focal punctuation. The value range spans 57 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. In the context of Vincent van Gogh's full range of palettes, group 15 represents one movement in an ongoing chromatic dialogue.