The high-key values of Franz Roubaud give it an effulgent, almost bleached quality. 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. #F5F6F4 at 33.1% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. The most saturated colour, #583A2A, is reserved to 4.5% of the surface, where it acts as a focal punctuation. The value range spans 59 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Franz Roubaud's palette 1 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.