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What color
season am I?

Free · one selfie · 12 seasons

Color analysis, minus the $300 appointment. Upload one selfie and siOsi reads your undertone, depth, and contrast, then drops you into one of 12 color seasons with the palette that actually makes you look awake. No quiz, no guessing, no cap.

Analyze my photoSee the 12 seasons

What color analysis actually is

Color analysis finds the colors that flatter you based on your skin’s undertone, depth, clarity, and contrast, then sorts you into one of 12 seasonal color types and builds your personal palette. Wear your palette and your face reads brighter and more rested. Wear the wrong one and it quietly drains you.

siOsi reads three things straight from your photo:

Hue
Warm or cool – the yellow-vs-blue lean of your skin.
Value
Light or deep – how much contrast you carry.
Chroma
Soft or bright – muted and dusty, or clear and saturated.

Color analysis guides

Grouped by what each guide answers. The 12 season guides live on the season cards below. The ones marked Test have an at-home test you can run on the page.

The 12 color seasons

Four families, each split three ways by depth and clarity. Real siOsi palettes – the exact colors we’d hand you.

Real reads from siOsi

Actual public results – each is a real season read with the palette siOsi handed back.

Warm Spring – real siOsi color analysis

Warm Spring

See the look →
Cool Summer – real siOsi color analysis

Cool Summer

See the look →
Deep Autumn – real siOsi color analysis

Deep Autumn

See the look →
Warm Autumn – real siOsi color analysis

Warm Autumn

See the look →
Soft Autumn – real siOsi color analysis

Soft Autumn

See the look →
Light Summer – real siOsi color analysis

Light Summer

See the look →
Cool Winter – real siOsi color analysis

Cool Winter

See the look →

How to find your undertone

Undertone is the single biggest driver of your season, and no single home test nails it on its own. Run a few together:

  • Wrist veinsBlue or purple reads cool. Green reads warm.
  • Gold vs silverWhichever metal makes your skin glow points to your undertone.
  • White vs creamPure white flatters cool skin; cream flatters warm.
  • Sun reactionBurn-then-fade leans cool; tan-easily leans warm.

When the tests disagree (they will), that’s where a photo read wins – siOsi weighs all the signals at once for a warm, cool, neutral or olive verdict.

How to find your undertoneTestRead the guide→

Color analysis, answered

What is color analysis?

Color analysis identifies which colors flatter you based on your skin's undertone, depth, clarity, and contrast. It sorts people into 12 seasonal color types (like True Autumn or Cool Summer) and produces a personal palette. siOsi does it free from one selfie in seconds – no questionnaire, no appointment.

What color season am I?

Your season depends on three traits: hue (warm or cool), value (light or deep), and chroma (soft or bright). Together they place you in one of 12 seasons. Upload a selfie to siOsi and its colorimetry engine reads all three and names your season instantly, free.

How do I find my undertone?

Use several tests together: check wrist veins (blue or purple reads cool, green reads warm), whether gold or silver jewelry flatters you, how you look in pure white vs cream, and how your skin reacts to sun. Single tests mislead – siOsi reads your undertone from a photo for an accurate consensus.

Am I a warm or cool undertone?

Warm undertones lean yellow, peach, or golden and suit gold jewelry and ivory. Cool undertones lean pink, red, or blue and suit silver and pure white. Neutral is a mix, and olive is a fourth answer that sits off the warm/cool axis with a green or grey cast. If the tests disagree, upload a selfie to siOsi for a warm, cool, neutral or olive reading in seconds.

Gold or silver – which suits me?

Hold gold and silver near your face in natural light. If gold is flattering and your skin glows, you likely have a warm undertone; if silver flatters and brightens, you lean cool; if both look good, you are neutral. It is a quick undertone check, and siOsi confirms it automatically from your photo.

Is free AI color analysis accurate?

Professional in-person analysis costs $200–$800 (virtual $50–$169+). AI tools like siOsi are free and read undertone, depth, and contrast from a selfie in seconds. Accuracy depends on a good, unfiltered, natural-light photo – avoid beauty-app filters and heavy makeup, which distort the reading.

What are the 12 color seasons?

The 12 seasons expand the four (Spring, Summer, Autumn, Winter) by depth and clarity: Bright, Warm, and Light Spring; Light, Cool, and Soft Summer; Soft, Warm, and Deep Autumn; Bright, Cool, and Deep Winter. Each has a distinct palette. siOsi maps your selfie to one of these 12 automatically.

What colors make me look washed out?

Colors that clash with your undertone, or that match your skin's depth too closely, drain your face – often muted or overly warm/cool shades against the wrong season. Wearing your season's palette instead adds contrast and glow. siOsi shows which colors flatter you and which to avoid.

Does siOsi analyze makeup too?

Yes. Beyond color season and undertone, siOsi runs 15 makeup labs from the same selfie – foundation match, flashback, oxidation, coverage, blending, longevity, and more – each with a confidence score. It is color analysis plus makeup diagnostics in one free tool, which most color-analysis apps do not offer.

Do filters or makeup affect the result?

Yes – beauty-app filters, heavy makeup, and colored lighting distort undertone and skin depth, throwing off the reading. For the most accurate color analysis, upload a clean, well-lit, natural-light selfie. siOsi flags low-confidence photos so you know when to retake.

Where color analysis comes from

Sixty years of figuring out which colors flatter people – from a Bauhaus classroom to a Seoul studio. The short version.

  1. The Art of Color by Johannes Itten
    1961Johannes Itten

    The Art of Color

    At the Bauhaus, painter Johannes Itten set his students a color-harmony exercise and got a shock: every sheet was harmonious in a completely different way. He called it "subjective color", read each palette as an expression of the person – and matched students to seasonal moods to paint. That's the seed the whole field grew from. He was the theorist, not the practical system.

    “the aura of the person”
    Johannes Itten, The Art of Color (1961)
  2. Color Me a Season by Bernice Kentner
    1978Bernice Kentner

    Color Me a Season

    Kentner turned Itten's seasonal idea into something regular people – and the cosmetics counter – could actually use, two years before the book that made it famous.

  3. Color: The Essence of You by Suzanne Caygill
    1980Suzanne Caygill

    Color: The Essence of You

    Caygill split each season into dozens of descriptive sub-types and turned the one-on-one color consultation into a real craft.

  4. Color Me Beautiful by Carole Jackson
    1980Carole Jackson

    Color Me Beautiful

    The one that went mainstream. Four seasons for everyone, still in its 31st printing by 1983. It put "what’s my season?" into everyday language.

    “Because it is difficult to print the color swatches 100 percent accurately … verbal descriptions will help you understand the concept of your colors when you shop for clothes.”
    Carole Jackson, Color Me Beautiful (1980)
  5. Kathryn Kalisz, creator of the Sci\ART 12-tone method
    1990s–2020sKathryn Kalisz → Seoul

    Kathryn Kalisz's Sci\ART method refined the four seasons into 12 tones using color science – hue, value, chroma. Decades later, Korea's personal-color studios and social-media draping videos made the whole thing global again.

“Most people have predominantly yellow undertones in the skin – not pink as many people think. It’s safest, when choosing a foundation, to err on the yellow or golden side, not the blue-pink side.”
Kevyn AucoinKevyn Aucoin – The Art of Makeup (1994)
siOsi · color guides

Go deeper on your colors

Test insideTwo women with deep coloring in a concrete stairwell under a hard camera flash, one warm-toned in rust and one cool-toned in black
Compare

Deep Autumn vs Deep Winter

Same depth, opposite temperature. Six tests that actually settle it.

Read the guide→
Test insideA woman with medium-deep golden-brown skin holding up oversized novelty glasses in flat daylight, one half of the frame built from yellow gold chain and the other half from bright silver, so warm and cool metal sit against the same face
Undertone

How to find your undertone

Five tests, and the conditions that make each one lie to you.

Read the guide→
Test insideFour women walking abreast, spanning the contrast range: pale blonde hair on very fair skin, golden-brown hair on tan skin, jet black hair on light skin, and black hair on deep brown skin
Contrast

Low, medium or high contrast

Measure it with your phone – then change it on purpose if you want.

Read the guide→
Woman with warm golden skin and soft multi-tonal caramel blonde hair sitting close in brightness to her complexion
Contrast

Skin-tone hair

The spring 2026 trend, and how to tell whether it suits you.

Read the guide→
Test insideTwo women wearing oversized cherry helmets in a kitchen, both with muted low-contrast coloring at the same depth, one cool-toned in a dusty plum crop top and one warm-toned in a soft brick crop top
Compare

Soft Summer vs Soft Autumn

The most-argued pair in color analysis. Six tests, and the honest middle answer.

Read the guide→
Test insideTwo women with equally light delicate coloring lying on white bedding under a hard camera flash, one warm-toned with golden blonde hair in peach and one cool-toned with ash blonde hair in powder blue
Compare

Light Spring vs Light Summer

Same lightness, opposite temperature. Six tests, and the honest middle answer.

Read the guide→
Test insideA woman with an olive complexion checking her reflection in the side of a plane, foundation swatches drawn along her jaw with two reading orange against her skin and one reading grey
Undertone

Olive undertone

Olive breaks the warm/cool binary. Why your tests keep contradicting each other, and what to do instead.

Read the guide→
Test insideA dot mosaic shown twice: as normal color vision sees it, with the figure legible, and simulated for deuteranopia, where it nearly disappears
Undertone

Color analysis when you are color blind

Which at-home tests still work if you are color blind, and which are a waste of your time.

Read the guide→
Test insideA woman with deep warm skin and long pale pink hair standing on a beach holding an oversized pink powder blush compact, a bedazzled pink kayak behind her
Makeup by season

Blush color by season

Which blush suits your season, all twelve of them, plus where to actually put it.

Read the guide→
Test insideThree women applying lipstick side by side, each in the red for her season: a deep warm brick on deep golden-brown skin, a warm orange-based poppy on light peachy skin with copper hair, and a cool blue-based true red on medium skin with jet black hair
Makeup by season

Lipstick color by season

Which lipstick suits your season, all twelve, and why nude is the hardest shade of all.

Read the guide→
Test insideA deeply tanned woman with an olive tan reclining in a deep teal swimsuit on a giant translucent pink inflatable shaped like the siOsi logo mark, on grass in front of a dark hedge
Skin tone

Best colors for tan skin

Tan is a depth, not an undertone. Which is why most lists for tan skin are wrong for half their readers.

Read the guide→
A woman in y2k street style with chunky silver jewellery holding a phone at arm’s length to take a selfie
Compare

Color analysis apps compared

Four tools compared on what they actually do, including where ours is the weakest.

Read the guide→
Close portrait of a woman in soft window daylight, jaw and neck visible, bare skin
Undertone

Can a photo actually read your undertone?

What a photo genuinely reads off your face, what the bulb overhead does to it, and why a shrug is sometimes the honest answer.

Read the guide→
Editorial portrait of a woman with deep warm coloring – dark brown hair and eyes – wearing layered rust and espresso tones in warm directional light
Seasons

Deep Autumn

Deep, warm, rich rather than muted. The full palette, your makeup shades, and what to skip.

Read the guide→
Editorial fashion portrait of a woman with high-contrast cool coloring – near-black hair, clear bright eyes, porcelain skin – wearing an electric blue coat over black with a hot pink scarf against a sapphire backdrop
Seasons

Bright Winter

The loudest palette in the system. Full swatch list, your makeup shades, and what dims you.

Read the guide→
Editorial fashion portrait of a woman with cool high-contrast coloring – dark ash-brown hair, cool rosy-porcelain skin – wearing a navy wool coat over a soft white blouse with a violet scarf against an icy blue backdrop
Seasons

Cool Winter

The coolest coloring in the system. Full palette, icy makeup shades, and what to skip.

Read the guide→
Editorial fashion portrait of a woman with deep cool coloring – blue-black hair, deep cool skin, dark eyes – wearing a true black coat over an emerald silk shirt with an icy blue scarf against a midnight navy backdrop
Seasons

Deep Winter

True Black, jewel tones, icy accents. The full palette, your makeup shades, and what to skip.

Read the guide→
Editorial fashion portrait of a woman with warm golden coloring and bright eyes wearing a saturated coral top with a turquoise scarf against a golden yellow backdrop
Seasons

Bright Spring

Warm, saturated, zero chill. The loudest palette in the Spring family, fully named.

Read the guide→
Editorial fashion portrait of a woman with golden peachy coloring and warm strawberry-blonde hair wearing a coral silk blouse with a honey-toned cardigan in warm sunlight
Seasons

Warm Spring

The golden core of the Spring family. Honey, coral, leaf green – warmth as a whole identity.

Read the guide→
Editorial fashion portrait of a woman with light golden-blonde hair and delicate warm coloring wearing a peach silk dress with a light aqua scarf in soft morning light
Seasons

Light Spring

The lightest, freshest corner of Spring. Peach, pistachio, warm ivory – sunrise colors, fully named.

Read the guide→
Editorial fashion portrait of a woman with light ash-blonde hair, soft blue-grey eyes and cool fair skin, wearing a powder blue shirt with a lavender knit over her shoulders in soft diffused daylight
Seasons

Light Summer

Light, cool and fresh – watercolor, not neon. The full palette, your makeup, and what to skip.

Read the guide→
Editorial fashion portrait of a woman with ash-brown hair, cool grey-blue eyes and rosy fair skin, wearing a slate grey blazer over a misty blue shirt against a dusty purple backdrop in soft light
Seasons

Cool Summer

The coolest season of all – also called True Summer. The full palette, your makeup, and what to skip.

Read the guide→
Editorial fashion portrait of a woman with muted ash-brown hair, soft grey-green eyes and low-contrast cool-neutral skin, wearing layered dusty plum and misty grey tones in diffused window light
Seasons

Soft Summer

Muted, cool-neutral, quietly expensive. The full palette, your makeup, and what to skip.

Read the guide→
Editorial portrait of a woman with muted warm coloring – soft light-brown hair and gentle low contrast – wearing layered sage and camel tones in soft window light
Seasons

Soft Autumn

Muted, warm, low contrast – the season everyone mistakes for "no season". Full palette inside.

Read the guide→
Editorial portrait of a woman with golden warm coloring and copper-auburn hair wearing layered rust and mustard tones in warm amber light
Seasons

Warm Autumn

Golden, earthy, unapologetically warm. The full palette, your makeup shades, and what to skip.

Read the guide→

Find your season now

Free, instant, no signup. One selfie does it.

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siOsi · makeup guides

While you're here – learn the looks

A clean, defined lipstick application on a woman with natural skin texture
Lips

How to apply lipstick

Prep, line and fill for a clean lip that lasts – plus the red that suits your undertone.

Read the guide→
A quick, fresh everyday makeup look on a woman with real skin texture
Full looks

5-minute makeup

Five multitasking products, one smart order – a fast face that still looks done.

Read the guide→
A curated open makeup bag with a few core products and brushes, real skin texture
Full looks

Makeup bag essentials

The core products and tools for a complete face – build a kit that works, skip the haul.

Read the guide→
All tutorials→