Francois Boucher sits in the centre of the value range, lending the palette a sense of even, sustained light. Francois Boucher keeps warm and cool in parity, a balance that lends the work a perceptual shimmer. All colours lean toward grey, building depth through value rather than colour punch. The highest-chroma note - #573E34 - appears at just 9.4%, deployed as a precision accent against the quieter ground. At 58 units of value range, the palette has the tonal breadth to sustain complex spatial readings. Palette 4 sits within the larger chromatic argument that Francois Boucher's complete body of work advances.