What's the difference between the 4-season and 12-season systems?

The 4-season system places everyone into Spring, Summer, Autumn, or Winter based on undertone alone. The 12-season system adds three sub-types per season (Bright/True/Light or Soft/True/Deep) to account for depth and contrast — making it 3x more accurate for personalized palettes.

The 4-season system (Carole Jackson, 1980) was the original — it groups everyone by undertone alone. Warm + light = Spring; cool + light = Summer; warm + dark = Autumn; cool + dark = Winter. Simple, but coarse.

The 12-season expansion (developed in the late 1990s, popularized in Korea in the 2010s) keeps the four seasons but adds three sub-types each — typically a 'Bright', 'True', and 'Light' or 'Soft' variant.

The benefit of 12 seasons is precision. A True Spring and a Light Spring share warm undertone but differ in depth and contrast. The colors that flatter each are noticeably different — Light Spring needs softer pastels; True Spring can carry clearer brights.

For most people, the 12-season system is worth the extra effort. Sub-season placement gives you 30-40 truly flattering colors rather than the ~60 of a broader 4-season palette (which inevitably includes some misses).

The 12-season system also acknowledges 'flow' — people who sit between two sub-types and can borrow from both sister palettes.

Related tools & guides

• All 12 seasons

Frequently Asked Questions

Which system is used in Korea?

12-season. The 4-season is rare in modern professional analysis.

Can I be exactly between two sub-seasons?

Yes — these are called 'flow' types and can wear colors from both sister palettes.

Is the 16-season system real?

Yes, some colorists use a 16-season expansion, but 12 is the global standard.

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