Dominant characteristic
The most extreme trait in your natural coloring, hue, value or chroma, that a season's palette is built around.
The dominant characteristic, also called the primary characteristic, is the single most extreme feature of a person's natural coloring among the three color dimensions, hue, value and chroma, and it is the trait a season's palette is built to match most intensely. In the twelve-season system, every season is named first for its dominant trait: True Spring's dominant trait is hue, warm, Light Spring's is value, light, Bright Winter's is chroma, bright. A second dimension, the secondary characteristic, clearly influences the palette too but sits mid-scale and is never allowed to be as extreme as the dominant trait, while a third dimension stays close to neutral and, by definition, is never hue. Identifying the dominant characteristic correctly is the core task of any color analysis, whether done through draping, a quiz, or a trained consultant's eye, because getting it wrong misplaces the whole palette rather than just one shade.
Why it matters
Everything about a season's palette, its name, its boldest colors, its neutrals, follows directly from its dominant characteristic. Misreading which trait is truly dominant is the single most common reason a full color-analysis result ends up feeling wrong.