Johan Jongkind is high-key - luminous, open, and weighted toward light. Johan Jongkind builds on cool foundations: the palette favours the blue-cyan-green arc. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. #322317 functions as the palette's exclamation mark: highest chroma, lowest percentage (5.2%). The full value range is 62 units: broad enough to build convincing three-dimensional form. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. This is palette 1 of Johan Jongkind's sequence - a single chapter in a chromatic story told across many works.