Flow
The idea that the twelve seasons form a closed circle, each blending gradually into its two neighbours.
Flow theory describes the twelve seasons as points on a closed circle rather than twelve isolated boxes, each one blending gradually into the two seasons next to it, which share one of its defining characteristics. Because the boundaries are gradual rather than sharp, most misdiagnoses happen right at the edge between two neighbouring seasons rather than between seasons on opposite sides of the wheel, and people who sit near a border can often borrow colors from the neighbouring palette without it looking wrong. Christine Scaman's 12 Blueprints system places particular emphasis on flow, treating the wheel itself, not just the twelve fixed categories, as the real model of how coloring varies from person to person. Understanding flow is especially useful for anyone whose quiz or draping result comes back as a near-tie between two adjacent seasons, since it explains why that happens rather than treating it as an error.
Why it matters
Flow explains why color analysis results can feel like a spectrum rather than twelve hard-edged categories, and it gives borderline people a practical way forward: lean toward the center of your own season but borrow safely from its two neighbours.