Isaac Sailmaker is high-key - luminous, open, and weighted toward light. Temperature is cool-dominant, with blue and green families claiming the largest areas. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. At 26.4%, #A3ACAD functions less as a colour accent and more as a complete atmospheric environment. At 4.8%, #7A5E30 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. Value range is moderate at 44 units - enough contrast for legibility, not so much as to fragment the tonal unity. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. This is palette 1 of Isaac Sailmaker's sequence - a single chapter in a chromatic story told across many works.