Johann Ludwig Bleuler works in the upper reaches of the value scale, creating an atmosphere of brightness and expansiveness. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #837A55 functions as the palette's exclamation mark: highest chroma, lowest percentage (6.0%). A value spread of 68 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. 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 Johann Ludwig Bleuler's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.