Figuring out which colors make you look alive versus washed out can feel like a complete mystery. You’ve probably stood in a store, held up two shirts, and just stared at yourself in the mirror, confused. It’s not about what’s trendy or what your friend looks great in. It’s about the undertone of your skin, not the surface color. Once you get that, shopping gets a whole lot easier.

Let’s start with the basics. Forget the whole “fair, medium, deep” labeling for a second. Instead, look at the veins on your wrist. If they look blue or purple, you’re likely cool-toned. If they look greenish, you’re warm-toned. If you can’t tell, or see a mix of both, you’re neutral. Another trick? Think about how your skin reacts to the sun. Do you burn first, then tan? That’s cool. Do you tan easily without burning? That’s warm.

For Cool Undertones (Pink, Red, or Blue undertones)

Your skin has a natural rosy or bluish hue, so you want colors that echo that crispness. Think jewel tones and icy pastels. These colors won’t fight with your skin; they’ll make it look clear and bright.

• Blues: True royal blue, sapphire, and navy are your safest bets. Steer clear of murky or olive-toned blues, which can make you look sallow.
• Purples: Deep violet, amethyst, and even bright periwinkle work wonders. Lavender is nice, but skip anything with too much yellow in it, like mustard-purple blends.
• Reds: Go for blue-based reds like crimson, raspberry, or cherry. Avoid brick reds or terracotta, which lean warm and can make your face look ruddy.
• Greens: Emerald, pine, and mint are fantastic. Avoid olive, khaki, or moss green. Those earthy tones will drain the life out of your complexion.
• Neutrals: Pure white, charcoal gray, and true black are great. But instead of beige or camel, try taupe or grayish-brown. Also, look for “cool” greys that have a hint of blue rather than green.

For Warm Undertones (Yellow, Peach, or Golden undertones)

Your skin glows with a golden or honeyed hue. You need colors that have that same warmth to them. Earthy, spicy, and sun-kissed shades will make your skin look radiant, not just tan.

• Oranges: This is your lane—coral, peach, pumpkin, and burnt orange all look incredible. But avoid neon or overly pinkish oranges, which can clash.
• Yellows: Dijon, mustard, and golden yellow are your friends. Stay away from lemon yellow or any yellow with a greenish undertone.
• Reds: Look for orange-based reds like tomato, rust, or poppy red. Crimson might work, but cherry red can make your skin look patchy. Terracotta? Yes, all day.
• Greens: Olive, moss, and forest green are perfect. So is any green with a yellow cast. Avoid emerald and deep pine, which are too cool.
• Neutrals: Camel, beige, cream, and warm tan are your go-tos. Instead of pure white, try off-white or ivory. Charcoal is okay, but warm browns and chocolates are even better.

For Neutral Undertones (Mix of Warm and Cool)

You lucky duck. You can pull off almost anything, but you’ll find that you look best in colors that are neither extremely bright nor extremely muted. You’re the balance keeper.

• Best bets: Mauve, dusty rose, sage green, and periwinkle. These in-between colors are made for you.
• Reds: You can wear both blue-reds and orange-reds, but a true, balanced red (like a stop sign) is phenomenal on you.
• Neutrals: You can mix warm and cool neutrals without looking off. Gray-beige, greige, and soft cocoa are all winners. You can even do stark white and near-black without much issue.
• What to avoid: Very heavy earth tones can make you look muddy, and super icy neon colors can wash you out. Stick to softened versions of both.

One more thing: don’t get hung up on rules if you love a color. These are guidelines, not laws. But if you’ve ever felt “off” in a certain shade and couldn’t put your finger on why, this is usually the culprit. Next time you’re shopping, hold the fabric close to your face, not just your hands. Look at the shadows under your eyes and around your jaw. The right color will minimize those shadows, brighten your eyes, and make your skin look smoother. The wrong one will emphasize tiredness and redness. Trust your mirror, but use this as a cheat sheet when you’re stuck.