Ernst Stuckelberg sits in the centre of the value range, lending the palette a sense of even, sustained light. Ernst Stuckelberg builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The most saturated colour, #5E4833, is reserved to 9.2% of the surface, where it acts as a focal punctuation. The value range of 54 units sits in the comfortable middle: enough depth, enough light, neither extreme. 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 2 of Ernst Stuckelberg's sequence - a single chapter in a chromatic story told across many works.