30-Second
Skin Undertone Test
Free, no signup, no photo upload. Find your warm, cool, or neutral undertone in 30 seconds — then get the colors that actually flatter you.
Find your undertone in 3 simple steps
No special tools. Just daylight and a quick check.
1. Prep
Get near a window with natural daylight and remove heavy makeup for an accurate read.
2. Observe
Check your veins, jewelry match, and how your skin reacts to the sun (tan vs burn).
3. Confirm
Compare your traits against warm, cool, and neutral signs to lock in your result.
The science behind undertone
Why the vein and jewelry tests work, and what they are actually reading.
Your skin gets its color from three pigments, not one. Melanin contributes brown, hemoglobin contributes red, and carotene contributes yellow-orange. Which of the three dominates relative to the others is what you perceive as a warm, cool, or neutral undertone.
The color of skin is created by pigments, including melanin, carotene, and hemoglobin.
That mix is set by genetics, which is why undertone does not change. Melanin is the primary determinant of human skin color and is synthesized by melanocytes in the basal layer of the epidermis (Biology, 2025). Sun exposure changes how much melanin your skin produces — that shifts your surface tone, not the pigment balance underneath it. A tan fades; your undertone does not.
Undertone is independent of how light or dark your skin is. The Fitzpatrick scale, introduced in 1972, sorts skin into six types by how it burns and tans (StatPearls). Google's 10-shade Monk Skin Tone scale, released in 2022, widens that range (Google). Both measure depth. Any value on either scale can pair with any undertone — which is why a shade that matches your depth can still look wrong on you.
Sources cited on this page
- Ernstmeyer K, Christman E (eds). Nursing Skills, Chapter 14: Integumentary Assessment. Open RN / NCBI Bookshelf, 2021
- Guermazi D, Saliba E. The Genetics and Evolution of Human Pigmentation. Biology (Basel), 2025
- Biochemistry, Melanin. StatPearls / NCBI Bookshelf
- Fitzpatrick Skin Type Recommendations. StatPearls / NCBI Bookshelf
- Monk Skin Tone Scale — Skin Tone Research at Google
Which undertone are you?
Spot the signs in seconds — then see the best colors for you.
Best colors that flatter your undertone
Use these quick picks to look more radiant — and avoid common mismatches.
Warm
Best for youGolden, peachy, or yellow-leaning skin. Often looks great in gold jewelry.
Cool
Best for youPink, red, or blue-leaning skin. Often suits silver jewelry and cool shades.
Neutral
Best for youBalanced mix of warm and cool. You can wear more shades — with the right tone.
The difference is real
When undertone matches, your skin looks clearer and more even. Slide to see the impact.
Popular guides to go deeper
Explore our comprehensive guides to understand the nuance between skin tone and undertone, and how to apply this knowledge to makeup and fashion.
Undertone vs Skin Tone
Learn the difference in 2 minutes.
Best Foundation Shades
Pick undertone-matched base shades.
Best Lip Colors
Find your perfect red, nude, or berry.
Jewelry Guide
Gold vs Silver: The definitive test.
Outfit Color Guide
Stop wearing colors that wash you out.
Common Mistakes
Why you might be misjudging yourself.
Real people, fewer wrong buys
“I finally understand why some shades looked off on me. The gold vs silver tip changed everything!”
“The color picks made my skin look instantly brighter. I stopped buying clothes that wash me out.”
“Quick, clear, and actually practical. Found out I'm neutral after years of guessing.”
Questions you might have
Ready to find your undertone?
Take the free test — and get colors that actually match you.
Start the test