Low, medium or high contrast
Undertone is a judgement call. Contrast isn't – and that's what makes it lovely. It's the one part of colour analysis you can measure at home in about thirty seconds and get the same answer twice. Take a bare-faced photo in daylight, strip the colour out, then look at how far apart your hair, skin and eyes sit on the grey scale. Big gaps mean high contrast. Everything bunched together means low. That single reading tells you how much intensity your face can carry before your makeup starts wearing you instead.

Contrast is about brightness, not colour
Value is how light or dark something is once you take the colour away. Contrast is the size of the gap between your features' values – specifically hair against skin, and eyes against the skin around them.
Removing the colour is the whole trick, and here's why. In colour, a redhead with pale skin looks dramatic and you'll call it high contrast. Convert to greyscale and that red hair often lands really close to her skin – which makes her medium at most. Your eye gets fooled by saturation. The greyscale doesn't.
Contrast is also independent of depth, which trips people up constantly. Someone with black hair and deep skin can be low contrast, because those two values sit close together. Someone with black hair and very fair skin is high contrast for exactly the opposite reason. Deep colouring doesn't mean high contrast, and mixing those two up is the most common mistake on this topic.
First, take the photo
Thirty seconds, and no equipment beyond your phone. Do this properly once rather than five times badly, because the conditions matter far more than the reading does.
- 01
Shoot in daylight, bare-faced
Face a window, no direct sun, no makeup, hair down and in its natural colour if you can. Front-facing, neutral expression. Indoor bulbs and any beauty filter will both flatten the exact values you are about to measure.
- 02
Convert it to black and white
Any phone photo editor will do. Apply the mono or greyscale filter and drop saturation to zero rather than reaching for a "dramatic B&W" preset, because those add contrast of their own and will inflate your reading.
Now read it
Look at your greyscale photo and answer these three. You're judging how far apart each pair sits from white to black, not whether anything is dark in absolute terms. Your level comes from the widest gap, not the average, so one strong jump is enough.
- 01
Hair against skin
The big one. In the greyscale photo, how far apart do your hair and your face sit?
- 02
Brows against skin
Often the real driver, and the one people forget. Judge your natural brows, not a filled-in shape.
- 03
Eyes against the skin around them
Iris and lash line together, against the surrounding face.
- 04
A black liner and a deep lip, together
optionalHow does that actually look on you? This is the sanity check on everything above.
Your reading
Answer all three gaps to get a reading. 0/3 so far.
Reading your own gaps is genuinely hard, which is why the cross-check above exists. siOsi reports your contrast level directly from one photo, next to your undertone and season – so you get the measured version without judging your own face.
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Three worked examples
Each pair is the same photograph twice, colour on the left and its own greyscale conversion beside it. Ignore the colour version. The grey one is the measurement.






What each level changes
Contrast governs intensity, meaning how strong a look you can wear before it stops reading as your face with makeup on and starts reading as makeup with a face behind it.
- Low contrast: go blended
- Soft, diffused, tonal. Brown or grey-brown liner instead of black, a tinted brow rather than a drawn one, lips a few steps away from your natural colour. Hard edges look pasted on. If you want drama, get it from saturation rather than from darkness.
- Low contrast: the classic mistake
- A full black winged liner. It is the single most common low-contrast error, because the liner becomes the darkest thing on your face by a mile and everything else recedes behind it.
- Medium contrast: widest range
- Most looks work if you keep one feature as the focus. A defined eye with a soft lip, or a strong lip with a bare eye. Doing both at full strength is where medium contrast tips over.
- High contrast: commit or skip
- A sharp black liner, a true red lip, a clearly defined brow: all yours. What does not work is halfway. A soft smudgy neutral eye often reads as tired rather than natural on you, because it sits below the contrast your face already has.
- High contrast: do not soften everything
- Blending away every edge is the high-contrast version of the low-contrast liner mistake. Your face already carries hard value jumps, so makeup that refuses to match them just looks unfinished.
- Any level: placement beats product
- Where you put blush and how far you blend it changes your apparent contrast more than which shade you bought. Contrast is about edges as much as depth.
Skin-tone hair: lowering your contrast on purpose
Everything so far treats your contrast as a fixed reading. It mostly is, but hair is the one variable you can move, and right now a lot of people are moving it deliberately in the same direction. Vogue called skin-tone hair the most subtle trend of spring 2026, and what it actually describes is a contrast adjustment: you pick a hair colour drawn from your own complexion so the gap between hair and skin closes up.
“It softens contrast so your features and your glow take center stage,” celebrity hairstylist SherriAnn Cole told Vogue. Her rule is to lean into tones that live in the same family as your skin, so warm caramel on golden complexions, beige and champagne blonde on lighter ones, deep browns on deeper skin. Colourist Jacob Schwartz described Margot Robbie's version as soft at the root, diffused and multi-tonal rather than stark against her skin.
Which is why the greyscale test is worth doing before you book anything. If you already measured low, skin-tone hair is going to look effortless on you. If you measured high and you want this look, you're deliberately giving up the sharpness your face currently carries, and you should go in knowing that rather than finding out afterwards.
One rule both stylists were firm about: don't take your brows with you. Cole keeps them one to two shades deeper than the hair; Schwartz goes slightly deeper on blondes and slightly softer on brunettes. “It's less about matching and more about balance,” he said. “If everything is identical, you lose dimension, and the overall look can fall flat.” That lines up exactly with the widest-gap rule above. Your brows are usually the thing setting your contrast, so if you flatten the hair and the brows together you don't land on low contrast, you land on no contrast.
There's a lot more to it than fits here, including what to ask for by undertone and how much upkeep it actually needs, so it has its own page: skin-tone hair, start to finish.

How contrast maps to your season
Contrast isn't a season on its own. It's one of three axes that place you in one, alongside undertone and chroma. It does narrow things down fast though.
High contrast points toward Winter, and specifically toward Bright Winter and Deep Winter, which are the two seasons built to carry hard value jumps. Low contrast points toward the soft and light seasons like Soft Summer, Light Summer and Soft Autumn, whose palettes are deliberately close in value. Medium sits with the true and warm seasons, which want separation without extremes.
Where contrast really earns its keep is as a tiebreak. If you're stuck between two neighbouring seasons and one is a Bright or Deep while the other is a Soft or Light, your greyscale reading will usually resolve it faster than another round of draping – because unlike undertone, you can genuinely measure it.
“It softens contrast so your features and your glow take center stage.”
Or read it off your analysis
siOsi reports your contrast level directly, next to your undertone and season, from the same photo. So you get the measured version without doing the greyscale conversion yourself.
Contrast is one of fifteen labs, and the makeup ones are what turn a reading into something you can act on. Blending and transitions look at how your edges actually sit, which is the whole game at low contrast. Shimmer matters because a finish reads as extra brightness on your face, so it shifts apparent contrast without you changing a single shade. There are geometry reads too – lips, eyelids and face shape – which govern where you put things rather than which colour you pick.
It's worth having both, though. The analysis gives you the reading, this page gives you the reason, so when a look doesn't work you can tell whether you picked the wrong shade or the wrong intensity. Those are different problems with different fixes, and intensity is the one nobody ever suspects.
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Answered
How do I know if I am high contrast?
Convert a bare-faced daylight photo to greyscale and look at the gap between your hair and your skin. If one reads near-black and the other near-white, you're high contrast. Absolute darkness doesn't matter. The size of the gap does.
Can I be deep and low contrast at the same time?
Yes, and it is common. Deep skin with deep hair sits at similar values, so the gaps stay small even though everything is dark. Depth and contrast are separate measurements, and conflating them is the most frequent mistake here.
Does dyed hair change my contrast?
It changes your current contrast, which is what your makeup has to work with today. Your natural contrast is what your colour season describes. If you have gone from mid-brown to platinum, dress and paint for the platinum while you have it.
Why does black liner look wrong on me?
Almost always low contrast. Black becomes the darkest thing on your face by a wide margin and pulls focus off everything else. Brown, grey-brown or deep plum liner gives you definition without the jump.
Is contrast the same as chroma?
No. Contrast is about value, so light versus dark. Chroma is about saturation, so bright versus muted. A face can be low contrast and high chroma at once, which is roughly what Light Spring looks like.
What is skin-tone hair?
A hair colour drawn from your own complexion, so the gap between your hair and your skin closes up and your overall contrast drops. Vogue named it the most subtle trend of spring 2026. In practice that means warm caramel on golden skin, beige or champagne blonde on lighter complexions, and deep browns on deeper skin.
Will skin-tone hair suit me?
Run the greyscale test first. If you already read low contrast, it will look effortless. If you read high, you are deliberately trading away the sharpness your face currently carries, which is fine as a choice but worth making on purpose rather than by accident.
Should I dye my eyebrows to match my skin-tone hair?
No, and the stylists behind the trend are firm about it. Keep brows one to two shades deeper than the hair. Your brows are usually the feature setting your contrast, so flattening the hair and the brows together does not give you low contrast, it gives you no contrast, and the whole face goes flat.
Keep reading
Related guides

Skin-tone hair
The spring 2026 trend, and how to tell whether it suits you.
Read the guide→
How to find your undertone
Five tests, and the conditions that make each one lie to you.
Read the guide→
Deep Autumn vs Deep Winter
Same depth, opposite temperature. Six tests that actually settle it.
Read the guide→Find your season
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