The original colour analysis system, popularised in the 1980s by Carole Jackson's Color Me Beautiful, placed everyone into one of four seasons: Spring, Summer, Autumn, or Winter. It worked well enough as a framework, but it missed something important: the same season label covered an enormous range of actual colouring. A Light Spring and a Clear Spring are both Springs, but their palettes look almost nothing alike.
The 12-season system, developed through subsequent decades of professional colour analysis, solves this by dividing each season into three sub-seasons. The result is more precise, more useful, and — once you understand the logic — no more complicated than the original.
The three measurements that determine your season
Your season is determined by three properties of your colouring, measured in combination. You cannot determine your season from any single measurement alone.
Undertone
The colour temperature of your skin at its base. Warm undertones carry yellow, peach, or golden tones. Cool undertones carry pink, blue, or violet. Neutral sits in the middle.
The wrist test most people know (blue veins = cool, green veins = warm) is an indicator, not a definitive reading. Vein colour is affected by skin depth, lighting, and the angle of the viewing. A calibrated selfie analysed by a vision model is more reliable — it reads the actual tone of the skin rather than inferring from a blood vessel visible through the skin.
Value
The overall lightness or darkness of your colouring — considering skin, eyes, and hair together. A woman with platinum blonde hair, pale skin, and light blue eyes has very light value. A woman with dark brown skin, near-black hair, and dark brown eyes has very deep value. Most people fall somewhere in between, and the value measurement considers all three in combination rather than any single feature.
Chroma
The saturation or clarity of your colouring. Some people's colouring is bright and clear — there is a vivid, high-saturation quality to how they look, even if their value is light. Others have a muted, softer quality — their colours are blended rather than bright, harmonious rather than contrasting.
Chroma is the measurement most frequently overlooked in self-analysis — and the one that makes the largest difference to how your palette performs.
The 12 seasons: how they divide
Each of the four base seasons — Spring, Summer, Autumn, Winter — divides into three based on the secondary measurement that most characterises your colouring within that season.
Spring (warm, clear, medium-to-light)
- Light Spring: Warm and light. Delicate, warm colours — peach, cream, soft coral, warm ivory. The lightest values in the spring family.
- Warm Spring: Warm and medium. More golden and saturated than Light Spring. Sunflower, warm teal, amber, burnt orange. The warmest of the spring family.
- Clear Spring: Warm and clear. Bright, vivid, high-contrast. Clear red, bright teal, warm cobalt. The clearest and most saturated spring type.
Summer (cool, muted, light-to-medium)
- Light Summer: Cool and light. The most delicate summer type — powder blue, soft lavender, dusty rose. Nothing dark or saturated.
- Cool Summer: Cool and medium-saturation. Slate blue, mauve, pewter. More confident than Light Summer, but never reaching winter's intensity.
- Soft Summer: Cool and muted. The most muted summer type — smoky, grey-toned, understated. Saturation is a liability; softness is the asset.
Autumn (warm, muted, medium-to-deep)
- Soft Autumn: Warm and muted. The most balanced autumn type — terracotta, camel, olive, plum-brown. Warm but not intensely so.
- Warm Autumn: Warm and medium-saturation. The most golden autumn type — burnt orange, deep rust, amber, forest green.
- Deep Autumn: Warm and deep. The richest, darkest autumn — burgundy, dark olive, chocolate, deep terracotta.
Winter (cool or neutral, clear, medium-to-deep)
- Deep Winter: Cool and deep. The most dramatic winter type — ink forest, garnet, true red, aubergine.
- Cool Winter: Cool and clear, medium value. Electric blue, icy lavender, fuchsia, deep navy.
- Clear Winter: High contrast, very clear. Jet black with icy white, vivid red, cobalt. The most dramatic contrast in the system.
How to use your season
The season is a tool, not a rule. The point is not to wear nothing except your anchor colours. The point is to understand which direction your palette runs — which colours work with your natural colouring and which work against it — so that when you're standing in a changing room with a sweater in each hand, you have a framework for the decision rather than a feeling.
In practice, the most useful applications are:
- The anchor colours: six colours that reliably work near your face. These are the colours to build from.
- The avoid list: not colours you can never wear, but colours that reliably create flatness, shadows, or a washed-out quality near your face. Worth knowing before you spend money.
- The neutral palette: what functions as a neutral for your season. For Soft Autumn, camel and warm brown are neutrals. For Cool Winter, charcoal and navy are neutrals. The season tells you which neutrals are genuinely neutral for you.
The Atelier app runs the full 12-season analysis from a selfie — placing you in one of the 12 sub-seasons with reasoning — and gives you the anchor palette, secondary colours, and avoid list in one result. The analysis takes under 90 seconds and uses Claude's vision model to read undertone, value, and chroma from a calibrated image.