Color seasons sort human coloring into four families: spring, summer, autumn and winter, based on skin undertone (warm or cool), lightness and the contrast between skin, hair and eyes. Each season divides into three subtypes, giving 12 color seasons, and each comes with its own palette for clothes, makeup and hair.
Each season has three subtypes, and the subtype is what actually gives you a shoppable palette. Full subtype guides with 30-color palettes are coming soon; until then, each card leads to its season and a photo analysis pins down your exact subtype.
The original analysis from the 1980s used just 4 seasons. The problem: two "summers" can look completely different, one light and delicate, the other deep and smoky. Modern color analysis fixes this by splitting each season into three subtypes by its dominant trait: lightness, depth, warmth, coolness, brightness or softness. That gives the 12 season system used by most analysts today.
Some tools go further and market 16 seasons, adding a fourth subtype to each season. In practice the extra four are blends of the neutral subtypes: the labels multiply, but the recommended colors barely change. We stay with 12 because it is the sweet spot between precision and usefulness: every one of the 12 palettes is distinct enough to shop from, and the result is stable rather than an arbitrary borderline call.
If you have seen "personal color analysis" all over TikTok, that is the Korean take on seasonal color analysis. In Seoul, studios charge serious money to drape fabrics next to your face and announce whether you are a "warm tone" or "cool tone", then a season. The system underneath is the same 12 seasons described on this page. An AI photo analysis does the Korean personal color test from a selfie: it measures your undertone and contrast instead of eyeballing drapes, and shows your palette on your own photo, no flight to Seoul required.