The value structure of Antonio Mancini is mid-key: quiet, controlled, and cohesive. 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. At 27.4%, #181818 functions less as a colour accent and more as a complete atmospheric environment. #73573F functions as the palette's exclamation mark: highest chroma, lowest percentage (3.5%). At 64 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Palette 4 sits within the larger chromatic argument that Antonio Mancini's complete body of work advances.