Jean-Baptiste van Loo works almost entirely in the lower half of the value scale, privileging depth over brilliance. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. Jean-Baptiste van Loo gives 26.3% of the composition to a single #222019 - a decisive chromatic anchor. Only 4.4% is devoted to #673E20, yet that small allocation delivers the palette's entire chromatic tension. The palette spans 40 value units: a measured range that delivers coherence over drama. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. This is palette 6 of Jean-Baptiste van Loo's sequence - a single chapter in a chromatic story told across many works.