Choosing color by undertone
Undertone is the hue beneath your skin's surface color — warm (golden), cool (pink or blue), or neutral — and it stays constant whether you tan or not.
Wiki
Colour guides, undertone pairing, and accessory norms.
Undertone is the hue beneath your skin's surface color — warm (golden), cool (pink or blue), or neutral — and it stays constant whether you tan or not.