Marthe Donas distributes its values across the middle register, creating harmony without high contrast. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Saturation is measured and controlled, giving the palette presence without visual aggression. The highest-chroma note - #130C06 - appears at just 3.9%, deployed as a precision accent against the quieter ground. The value range spans 65 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 Marthe Donas's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.