Arthur Rackham is high-key - luminous, open, and weighted toward light. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. All colours lean toward grey, building depth through value rather than colour punch. Only 5.3% is devoted to #C2AA8C, yet that small allocation delivers the palette's entire chromatic tension. The value range of 49 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. In the context of Arthur Rackham's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.