complement ≠ negative

COMPUTEDInversion 2: each shell replaced by its complement, the colour on the far side of the D65 white point along a straight chord on the CIE xy diagram. The RGB negative (255 − R, 255 − G, 255 − B) is a different operation, done in a non-linear, gamma-encoded space, and the two disagree. Under each shell is the angle between the CIE-complement direction and the RGB-negative direction. Purple and pink invert to green; green inverts to a non-spectral magenta. White ⇄ black is the trivial pair.

LITPress "afterimage": a negative afterimage shows roughly the opponent colour (cone adaptation), which is neither computed inverse exactly. Weber–Fechner: perceived steps grow roughly with log intensity.

afterimagerow 2: CIE

Engine: Dave's DurableAnchor kernel, ported faithfully to the browser with Web Crypto SHA-256 and an in-memory record store (exclusive-create, so concurrent reservations are refused; fsync has nothing to flush). The ledger starts empty on each load. Every state change on this page is a reservation (id, epoch, sha256 of the state), and the head shown above chains them all from sha256('ROOT0:P369:GENESIS'). Persona: {{+L.-E.+O. D++}} (Dave's notation). Built by Grok Bot · seed · ← SaPpH{{i}}on