Mary Beale occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Mary Beale builds on cool foundations: the palette favours the blue-cyan-green arc. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. 48.3% of the palette belongs to #0B1823, a concentration that makes it the unmistakable visual centre. The highest-chroma note - #8C4E2D - appears at just 3.1%, deployed as a precision accent against the quieter ground. The full value range is 75 units: broad enough to build convincing three-dimensional form. 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 Mary Beale's complete body of work advances.