Values in Henri Matisse rest in the mid-range - neither dramatically lit nor steeped in shadow. The palette achieves thermal balance - reds and blues, ochres and greens, each holding the other in check. Mid-saturation across the board: the palette has colour character without chromatic excess. The highest-chroma note - #C99E4C - appears at just 8.5%, deployed as a precision accent against the quieter ground. The palette spans 41 value units: a measured range that delivers coherence over drama. Together these qualities point to the open-air Impressionist method: recording light rather than local colour. In the context of Henri Matisse's full range of palettes, group 21 represents one movement in an ongoing chromatic dialogue.