Not only does blue add radiance to the complexion, but it also assists in reducing the appearance of minor imperfections. And if you have deeper skin tones, blue might be your cure to quelling under-eye circles. Another cool tip is that blue, the opposite of orange, can also help to neutralize overly Oompa Loompa-esque pigments caused from self-tanners.
In addition, purple, lilac, and mauve shades (which are somewhat close to the blue color family) can neutralize sallow, yellow tones. Hues of purple also can brighten olive skin and balance out yellowish blemishes on most skin tones. Try: Make Up For Ever's HD Microperfecting Primer in Blue or Mauve ($34), Givenchy's Mister Mat Mattifying Foundation Primer ($33), or Signature Club A by Adrienne's Anchorwoman Blue Dark Circle Cover ($16).
Source: Flickr User Linzi Clark /