Reviewed by the Tonebook color team · Updated June 2026
Your undertone picks the polish family — warm: coral, terracotta, warm cream · cool: blue-red, berry, mauve · neutral: rose, dusty pink — and your skin's depth picks the intensity: deeper skin carries richer, more saturated polish beautifully. Nails are also the lowest-risk place in your whole wardrobe to break the rules.
Polish sits directly against your skin, so the warm-vs-cool logic of color analysis applies at full strength — just at a small scale. The quickest wins:
| Undertone | Reliable winners | Often fights the skin |
|---|---|---|
| Warm | Coral, terracotta, tomato red, warm cream, bronze | Icy blue-pinks, stark white |
| Cool | Blue-red, berry, mauve, plum, soft pink | Orange corals, mustard tones |
| Neutral | Rose, dusty pink, soft red, taupe | Only the extremes of either list |
| Olive | Deep wine, oxblood, chocolate, muted rose | Pale chalky pastels |
Every undertone has a red — the question is which one. Hold two bottles against your inner wrist in daylight: a blue-red (think classic cherry) and a tomato red (orange-leaning). One will make your skin look clean and the veins recede; the other will make the skin around it look slightly off. Cool undertones keep the cherry; warm undertones keep the tomato; neutrals can usually wear a true red that splits the difference.
A working nude is roughly your skin a half-step deeper or pinker — which means nude is different for everyone:
If a nude makes your hands look grey or your knuckles ashy, it is too light or the wrong temperature — go deeper first, then adjust warm/cool.
| Family | Everyday shelf | Statement shelf |
|---|---|---|
| Spring | Clear coral, peach, warm rose | Poppy, warm turquoise accent |
| Summer | Rose, mauve, dusty pink | Raspberry, soft plum |
| Autumn | Terracotta, brick, bronze, olive | Oxblood, burnished copper |
| Winter | Blue-red, true red, taupe-grey | Fuchsia, vamp (near-black plum) |
Nails are small and far from your face — the two factors that make a wrong color costly in clothing barely apply. A Soft Summer in neon orange polish suffers no real consequence; the same color as a blouse would be a different story. So treat the tables above as your "reliably flattering" shelf, not as law. Nails are the sanctioned place to play outside your season.
One rule worth keeping even at play: when polish, lipstick and outfit all appear together, keep them in the same temperature. A blue-red lip with a tomato-red manicure reads slightly off even when each is fine alone. Match temperature, not exact color.
The classic French tip uses stark white — which flatters cool and deep coloring but can look stuck-on against warm or soft skin. Warm undertones: swap the tip to soft cream. Soft seasons: try a tonal French (tip one step lighter than the base nude). Deep skin: the high-contrast white tip is genuinely yours — or invert it with a deep tip over a caramel base.
Tonebook reads your undertone, value and chroma from one selfie and gives you a palette that works from neckline to nail. Find your red once, use it forever. First analysis free.
Get Tonebook for iPhoneYour personal nude — roughly your skin a half-step deeper or pinker — and your undertone's red. Those two bottles cover almost every outfit you own, because they are derived from your skin rather than from any garment.
On nails, yes — nails are small and far from the face, so the cost of an off-temperature color is minimal. If you want coral to flatter rather than just decorate, choose a pink-leaning coral rather than an orange one.
Test a blue-red (cherry) and a tomato red against your inner wrist in daylight. The one that makes your skin look cleaner and brighter is yours: cherry for cool undertones, tomato for warm, true red for many neutrals.
Deep skin carries saturation beautifully: rich berries, oxblood, fuchsia, cobalt, emerald and warm metallics all shine. For nudes, go rich — caramel, toffee, cacao — rather than the too-pale beiges that read ashy.
They don't need to match, but they should agree on temperature: warm lip with warm nails, cool with cool. An exact match reads dated to some and classic to others — temperature harmony is the part that actually affects how your skin looks.
Yes — on nails, black is drama without consequence for any season. If you want a version with more harmony, Winters own true black; Autumns can use espresso; Summers a deep plum-grey; Springs a deep warm brown.