The value structure of Helene Schjerfbeck is mid-key: quiet, controlled, and cohesive. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. Only 4.0% is devoted to #3A1E10, yet that small allocation delivers the palette's entire chromatic tension. At 69 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. In the context of Helene Schjerfbeck's full range of palettes, group 10 represents one movement in an ongoing chromatic dialogue.