The value structure of Henry Ossawa Tanner is mid-key: quiet, controlled, and cohesive. Henry Ossawa Tanner tilts toward cool - blues and silver-greys carry the structural weight. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. Only 7.3% is devoted to #36518B, yet that small allocation delivers the palette's entire chromatic tension. From deepest dark to palest light, the palette traverses 66 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. This is palette 10 of Henry Ossawa Tanner's sequence - a single chapter in a chromatic story told across many works.