If you've ever looked up at a clear night sky and couldn't decide exactly what color it was, you've discovered a variation of blue-black. Ahead, learn more about the trend and how to maintain this ...

The background color is inspired by International Klein Blue, a hue that the artist Yves Klein first mixed in the 1950s, using it to make an array of monochromatic paintings until his death in 1962.

There is a definitive answer to the color question. The retailer of the dress, Roman Originals, confirmed that the dress is blue and black in reality, tweeting on Feb. 27, 2015, "We can confirm # ...