The high-key values of Margaret Macdonald give it an effulgent, almost bleached quality. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Saturation is measured and controlled, giving the palette presence without visual aggression. The chromatic peak belongs to #ECCC56, and at 19.8% it dominates, not decorates. At 67 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. In the context of Margaret Macdonald's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.