Isaac Sailmaker occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. Only 8.8% is devoted to #443625, yet that small allocation delivers the palette's entire chromatic tension. At 36 units across the value scale, the palette keeps contrast readable without letting it dominate. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. This is palette 4 of Isaac Sailmaker's sequence - a single chapter in a chromatic story told across many works.