John Henry Twachtman works in the upper reaches of the value scale, creating an atmosphere of brightness and expansiveness. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. At 3.5%, #6885A3 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. The full value range is 61 units: broad enough to build convincing three-dimensional form. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. John Henry Twachtman's palette 6 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.