Values in James Webb rest in the mid-range - neither dramatically lit nor steeped in shadow. James Webb builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The saturated accent, #382618, registers at 5.2% - sparse enough to feel like a deliberate surprise. The value range of 52 units sits in the comfortable middle: enough depth, enough light, neither extreme. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. This is palette 7 of James Webb's sequence - a single chapter in a chromatic story told across many works.