When consulting experts who advise women on which colors work best for them, you may hear terms like "warm" or "cool" in relation to your skin tone. In order to choose the most flattering colors to wear, it's important to understand what these terms mean and to find out which one best describes your skin tone. In clothes, as with makeup, the undertones in your skin as well as hair and eye color give valuable clues as to what shades will work most harmoniously with your natural coloring. These factors directly impact what colors will look best on you.