Pietro Longhi sits in the centre of the value range, lending the palette a sense of even, sustained light. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #2D340E at 28.1% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. The most saturated colour, #D09E44, is reserved to 5.0% of the surface, where it acts as a focal punctuation. The full value range is 67 units: broad enough to build convincing three-dimensional form. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 4 sits within the larger chromatic argument that Pietro Longhi's complete body of work advances.