Gerard van Honthorst is low-key throughout, a quality associated with Tenebrous Sienna - deep shadows dominate the composition. Gerard van Honthorst builds 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. #0A0B0B claims 49.2% of the surface, functioning as the work's tonal foundation. The saturated accent, #8D6C2C, registers at 2.5% - sparse enough to feel like a deliberate surprise. The full value range is 70 units: broad enough to build convincing three-dimensional form. Together these qualities place Gerard van Honthorst firmly in the tonal tradition - concerned with mood and atmosphere rather than chromatic display. In the context of Gerard van Honthorst's full range of palettes, group 6 represents one movement in an ongoing chromatic dialogue.