Is my photo uploaded anywhere?

No. The selfie is read and sampled entirely in your browser. It is never sent to a server, stored, or shared. You can confirm this by using the tool offline.

What is a skin undertone?

Your undertone is the subtle, constant hue beneath your skin's surface color: warm (golden or peachy), cool (pink or rosy), neutral (a balance), or olive (a soft green cast). It stays the same even when a tan changes your surface tone, which is why it guides which colors and metals flatter you.

How does the tool decide?

It averages the three points you tap in OKLab, a perceptually even color space, then reads the hue angle: golden-yellow points to warm, pink-red to cool, a yellow-green cast to olive, and a balance to neutral. An optional white-point calibration corrects your camera's color cast first.

Is this a medical or professional analysis?

No. It is a fun, rule-based guide. Lighting, camera, and screen all affect the reading, so treat it as a starting point, not a diagnosis or a substitute for an in-person color consultation.

Skin undertone finder

Warm, cool, neutral, or olive? Add a selfie in even light, tap three skin points, and get a reading with the colors and metals that tend to flatter your undertone. It is a playful guide, not a verdict, and your photo never leaves your device.

How this works

1 Add a selfie taken in even, natural light.
2 Tap your forehead, cheek, and jawline; calibrate on something white first if the light is warm.
3 Read your undertone, with jewelry metals and the color families that flatter it.

Your photo never leaves your device. Everything here runs in your browser.

Add a selfie in even, natural lightFace a window, no makeup filter, no heavy shadow. Then tap the guided points.

Guide

What an undertone actually is

Surface skin tone is how light or deep you are, and it changes with sun and season. Undertone is the quieter hue underneath, and it stays put. The four common readings are warm (a golden or peachy cast), cool (a pink or bluish-red cast), neutral (no strong lean either way), and olive (a soft green-gray cast that sits on top of warm or neutral skin).

Undertone is the useful part for choosing color because it is stable. The same person looks lit-up in one set of colors and drained in another, and undertone is most of the reason. Warm undertones tend to glow next to earthy, sun-warmed colors and gold jewelry; cool undertones sharpen next to clear, jewel-like colors and silver.

Guide

How this tool reads it

There is no black box here. The three points you tap are averaged in OKLab, a color space built so that equal numeric steps look like equal perceptual steps. The average is converted to a hue angle, and that angle is placed into a band: a golden-yellow hue reads warm, a pink-red hue reads cool, a yellow-green hue reads olive, and the middle ground reads neutral. When your three taps disagree a lot, or the hue sits right on a boundary, the confidence drops and the tool says so.

Cameras lie about color, so the optional calibration step matters. If you tap a point in the photo that should be pure white, the tool measures how far your camera pushed it and undoes that shift on your skin samples first. A white shirt collar or a sheet of paper in the shot works well.

Guide

Getting an honest reading

Shoot in even, indirect daylight. Face a window; avoid overhead and colored light.
No makeup, filters, or heavy editing, and watch for colored walls bouncing light onto your face.
Tap bare skin, not a shadow, a highlight, or a blemish.
Try two or three photos. If they agree, trust the reading more.

For fun, not a medical or diagnostic tool. This is a rule-based guide that lighting and hardware strongly influence. It does not replace an in-person color analysis, and it says nothing about health.

FAQ

Common questions

Warm and olive both look yellow. How are they different?: Warm skin leans clean golden or peach. Olive skin adds a muted green-gray over the top, which pulls the hue further toward yellow-green and makes it look less bright. The tool separates them by how far the hue angle has shifted.
My reading changed between photos. Which is right?: Usually the one shot in better, more neutral light. If two careful photos disagree, you are likely neutral or close to a boundary, which the confidence label will reflect.
Can I use my result somewhere?: Yes. Copy any color in your best-colors strip, or download the share card. The result also lines up with the twelve-season color analysis if you want to go deeper.