Check here what kind of undertone your skin has

Is the color of your blood vessels on the inside of your wrist blue or purple? Does silver look better on you than gold?

Blue-purple veins indicate a cool undertone.

Is the color of your blood vessels on the inside of your wrist green? Does gold look better on you than silver?

Then you have a warm skin tone

Can't see the color of your blood vessels on the inside of your wrist? Do all the colors look good on you?