Abstract Expressionism occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Built 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. A single dominant - #282729 at 26.5% - sets the character of the whole composition. The saturated accent, #616C97, registers at 3.4% - sparse enough to feel like a deliberate surprise. Spanning 54 units on the value axis, the palette achieves the balance between tonal flatness and fragmentation. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky.