Otto Bache distributes its values across the middle register, creating harmony without high contrast. Otto Bache tilts toward cool - blues and silver-greys carry the structural weight. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The highest-chroma note - #5C3524 - appears at just 10.0%, deployed as a precision accent against the quieter ground. The value range spans 66 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. 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 Otto Bache's full range of palettes, group 3 represents one movement in an ongoing chromatic dialogue.