Naturalism keeps values measured and balanced, a hallmark of tonal restraint. Built on cool foundations: the palette favours the blue-cyan-green arc. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The saturated accent, #8C9B60, registers at 3.4% - sparse enough to feel like a deliberate surprise. 45 units of value spread create a palette that is varied but unified - contrast in the service of harmony. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively.