How to Find Your Undertone

In a sentence: to find your undertone, run the vein, jewellery, white-paper and sun tests together in daylight — green veins, flattering gold, peachy skin against white and easy tanning point warm; blue veins, flattering silver, rosy skin and burning point cool; a genuine tie points neutral. See the reference palette or find your season.

A client once told me, quite confidently, that she was warm — golden, like her mother. Then she held a sheet of plain paper under her chin and the pink in her skin jumped out at both of us. She'd been buying camel and rust for a decade and quietly wondering why she always looked a little tired in them. Undertone does that. It's the steady hue sitting underneath your skin, and it decides which colours make you look lit and which ones borrow the life out of your face — but it hides in plain sight, because the surface colour you actually see keeps shifting with sun and season.

That's the thing to hold onto before you test yourself. Skin tone is what you'd describe to a foundation counter — fair, medium, deep — and it tans, fades and flushes. Undertone is the quieter colour beneath it, and it doesn't move. The four tests below are how I read undertone on a client in the first minute, and the rule that matters most is this: never trust a single one. Run them together, look for agreement, and your undertone will show itself.

First, undertone vs skin tone

Picture two friends with the same pale skin. One looks radiant in cream and gold and a bit grey in pure black; the other looks crisp in white and silver and slightly muddy in camel. Same surface tone, opposite undertones — and that gap is the whole reason "find your undertone" is worth the ten minutes.

There are three answers. Warm undertones have gold, peach or yellow underneath. Cool undertones have pink, red or blue. Neutral sits between, with no strong pull either way (and "olive" is usually a neutral or warm-neutral skin with a green-grey cast). Your job isn't to force yourself into warm or cool — plenty of people land neutral. It's to read the signals honestly and see where they cluster.

The vein test

Roll your inner wrist towards a window — daylight only, never under a yellow bulb — and look at the veins through your skin.

• Green or olive veins lean warm. The yellow in your skin is sitting over the blue of the veins like a filter and tinting them green.
• Blue or purple veins lean cool. Your skin isn't adding that yellow wash, so the veins keep their true blue.
• A mix, or you honestly can't decide — that's a real result, and it usually means neutral.

It's a genuinely useful clue because it's reading the same yellow-versus-pink balance everything else does. But it's also the test people most often over-trust, so don't stop here. I've seen green-ish veins on a cool client whose other three tests all said pink. One reading is a hint; agreement across tests is the answer.

The jewellery test

This is the one I rely on most, because it shows you the effect undertone has on your face rather than your wrist. In daylight, with bare skin and no makeup, hold a piece of gold jewellery up beside your jaw, then swap it for silver. Don't look at the metal — look at your skin next to it.

• If gold makes your skin look even, lit and healthy while silver leaves it a touch grey or sallow, you're warm.
• If silver makes your skin look clean and fresh while gold makes it look yellow or muddy, you're cool.
• If both genuinely flatter you and you'd happily wear either, you're neutral — lucky you.

Take your time and trust the first honest impression rather than the metal you wish suited you. If you can, do it next to a window with a friend, because we're all a little biased about our own faces.

The white-paper test

Here's the one that caught out my golden-not-golden client. Pull your hair back, take off makeup, and hold a sheet of plain white printer paper flat against your bare face — cheek, jaw, neck — in daylight. The stark, truly neutral white gives your skin nothing to hide behind, so its underlying hue surfaces by contrast.

• Skin that looks yellow, peachy or golden against the white is warm.
• Skin that looks pink, rosy or slightly blue is cool.
• Skin that looks fairly even and balanced — neither obviously yellow nor pink — is neutral.

Two cautions. Use genuinely white paper, not cream or recycled stock, or you'll skew the read. And ignore active redness from spots or rosacea; you're looking for the steady cast across your whole face, not a single flushed patch.

The swatch above is a quick visual anchor. The warm cluster — Peach #F2B084, Golden Yellow #E3A52B, Terracotta #BE6A45, Olive Green #7E7A2E and Warm Teal #2E7B7B — is the family that flatters golden skin. The cool cluster — True Blue-Red #C8102E, Fuchsia #C2156E, Sapphire Blue #1F3A93, Emerald #0B6E4F and Soft Rose #C58A93 — is what lights up rosy skin. On the neutral side, Warm Cream #EDE0C4 and Ivory #F3ECDC beat stark white for warm and balanced skins, Greige #B7AC9B is the easy in-between, and Cool Grey #6E7076 and Navy #1E2749 give cool skin its quiet backbone. Notice your eye drifting to one side as you read your tests — that drift is information.

The sun test

Your skin's history tells on it, so think back over summers rather than this week.

• If you tan easily and rarely burn, going golden or olive-brown, you most likely lean warm.
• If you burn first, stay pink, and only tan reluctantly, you most likely lean cool.
• If you burn a little then tan, you're probably neutral.

It's the softest of the four — sun behaviour is shaped by ethnicity and melanin as well as undertone — so weight it least. But when it agrees with the paper and jewellery tests, it's a satisfying tiebreaker.

Reading your results together

Now line the four tests up and look for the cluster. Three or four pointing the same way is a clear undertone. A genuine split — gold and silver both fine, veins ambiguous, skin neutral against white — isn't a failure of the tests; it's the tests correctly telling you that you're neutral.

Honest caveats, because I'd rather you trusted this. Do it all in daylight; artificial light is the single biggest reason home tests go wrong. Do it bare-faced. And know the limit of what undertone gives you: it tells you the temperature of your palette, not your exact shades. A warm undertone could be a light, bright Spring or a deep, muted Autumn, and those want very different colours. Undertone is step one of three — depth and clarity finish the job.

That's where seasonal analysis comes in. Once you know your undertone, our colour analysis guides help you place yourself: if you read warm, start with True Autumn; if you read cool, look at True Summer. They show how undertone, depth and contrast combine into a full palette rather than a single warm-or-cool label.

Putting it together

Finding your undertone is genuinely the highest-leverage ten minutes you can spend on your wardrobe, because every colour decision afterwards gets easier — which white, which red, which metal, which foundation. Run the four tests in daylight, look for where they agree, and you'll have a fixed point that doesn't change with your tan. From there it's about matching depth and clarity to land your exact shades, and that last mile is hard to judge in your own mirror — it's precisely what a photo-based analysis settles, handing you not "you're warm" but your specific peach, your specific red. Start with the tests today, then let an analysis turn "I think I'm warm" into a palette you can actually shop from.