Francis Gruber distributes its values across the middle register, creating harmony without high contrast. Yellow, ochre, sienna: warm hues that Francis Gruber deploys as the palette's primary energy. Mid-saturation across the board: the palette has colour character without chromatic excess. #AA0209 at 25.0% is both the most chromatic and one of the largest colours in the palette - chroma as mass rather than as highlight. A value spread of 63 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. This is palette 6 of Francis Gruber's sequence - a single chapter in a chromatic story told across many works.