Undertone is always a factor that remains constant despite the appearance of lighter or darker skin tones. It is essential to know this before picking colours for one's outfit :
The undertones of warm-skin individuals are usually of gold, peach, or olive colours. Colours that are earthy or darker complement such skin tones quite nicely without dominating them.
The undertones of people with cool skin colour usually include shades of pink, red, or blue. Shades of blue, green, and other jewel-like colours complement such undertones.
Neutral undertones possess elements of both warm and cool skin types. This enables more colour options to become part of your wardrobe easily, making it less challenging to choose your colours.