Fra Bartolomeo sits in the centre of the value range, lending the palette a sense of even, sustained light. The palette achieves thermal balance - reds and blues, ochres and greens, each holding the other in check. All colours lean toward grey, building depth through value rather than colour punch. The highest-chroma note - #D6CCB2 - appears at just 5.8%, deployed as a precision accent against the quieter ground. The value range spans 64 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. Fra Bartolomeo's palette 4 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.