The value structure of Jacob Grimmer is mid-key: quiet, controlled, and cohesive. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The most saturated colour, #6D673E, is reserved to 6.8% of the surface, where it acts as a focal punctuation. From deepest dark to palest light, the palette traverses 72 units of the value scale - a span that creates natural depth. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. In the context of Jacob Grimmer's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.