Mattia Preti is built on dark foundations, with values clustered toward shadow. Warm hues command this palette; Mattia Preti favours the reds, oranges, and yellows of firelight and earth. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. Mattia Preti gives 27.0% of the composition to a single #29231F - a decisive chromatic anchor. The highest-chroma note - #AA4D3C - appears at just 2.3%, deployed as a precision accent against the quieter ground. A value spread of 63 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. Palette 6 sits within the larger chromatic argument that Mattia Preti's complete body of work advances.