Edward Henry Potthast is high-key - luminous, open, and weighted toward light. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The dominant colour, #9BB7E0, takes 30.4% of the total area, establishing the overall mood before any other hue is introduced. The chromatic peak belongs to #97AFCB, and at 9.7% it dominates, not decorates. The value range of 25 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. Palette 1 sits within the larger chromatic argument that Edward Henry Potthast's complete body of work advances.