October 12, 2026
Korean color analysis, Western "seasonal" analysis, 12-tone system, 16-season system: these terms get used a lot, often without much clarity. At Nuance, we deliberately combine two approaches — and we chose 12 sub-seasons over 16. Here's why.
The number 12 shows up twice, and it helps to tell the two apart. The PCCS, the color system behind the Korean method, has 12 tones. The seasonal system has 12 sub-seasons. The first is a language for describing colors. The second is a way to group profiles.
Seasonal color analysis started in the West in the 20th century. It sorts complexions into four broad families — spring, summer, autumn, winter — based on warmth and clarity. Simple and easy to teach, this base was later refined into twelve sub-seasons for more precision, and by some practitioners, into sixteen.
The Korean method relies on the PCCS (Practical Color Co-ordinate System). This color system was created in Japan in 1964. It is very widely used in South Korea, where personal color analysis (퍼스널 컬러) has become an almost standard part of the beauty routine. Instead of starting from four boxes, the PCCS describes every color with two precise markers: its hue and its tone.
Hue. The PCCS uses a color wheel of 24 hues. It is built on four psychological primary colors — red, yellow, green and blue — spaced at regular intervals, then completed by their in-between shades. This fine split lets you place a color precisely. For example, it tells apart a red that leans orange from a red that leans pink.
Tone. This is the great strength of the PCCS. A tone combines two things: saturation (how vivid a color is) and lightness (how light or dark it is). The PCCS groups colors into 12 tones, such as pale, vivid, dark or soft. Two colors with the same hue can look very different on your skin, depending on their tone. A vivid pink is not a soft pink.
To picture the tones, people often use a tone map, sometimes shown in 3D. The vertical axis is lightness, from white at the top to black at the bottom. The horizontal axis is saturation, from very gray, dull colors on the left to very pure, vivid colors on the right. Each tone sits in a precise area of the map.
This is the language that explains why one color dulls a face and another brings it to life. It is much finer than "warm" or "cool". On top of reading colors, the method reads the complexion itself: warm or cool undertone, observed without filters or makeup. That is exactly what tends to go wrong with at-home tests.
The strength of the Western method is its clear seasonal structure. It is easy to understand and to turn into a real wardrobe. The strength of the Korean method is the precision of its vocabulary, with its 24 hues and 12 tones, and the rigor of its undertone reading. At Nuance, we use both: your complexion is read with the precision of the PCCS, then placed within a clear, actionable seasonal structure. This combination — not either method alone — gives a result that is both precise and easy to use every day.
The 16-season system pushes subdivision further than the 12 sub-season system. For example, it splits a "cool summer" into several extra variants. On paper, more categories sounds like more precision. In practice, that's not always true. Beyond 12 sub-seasons, the differences between two neighboring categories become so fine that they rest almost entirely on personal judgment, even for a trained eye. The risk is giving an impression of scientific precision to a classification that no longer gives you information you can actually use to choose your colors.
We chose 12 sub-seasons because, in our experience, it is the best balance between real precision and practical clarity. Twelve sub-seasons are enough to capture the nuances that truly change a result: contrast, warmth, lightness, saturation. These are exactly the nuances that the PCCS tone can describe. We avoid over-segmentation, which makes choosing your colors harder without making it better. Our goal isn't to have the system with the most boxes. It's to give you the most reliable, most useful answer.
Neither the Korean method alone, nor the Western method alone, nor the most subdivided system guarantees the best result. It's the thoughtful combination of both approaches, and a number of categories chosen for reliability rather than the look of precision, that makes an analysis genuinely useful.
Curious to discover your profile among the 12 sub-seasons? Our free pre-diagnosis gives you your main season in just a few minutes.