This season, designers raided the crayon box and created ultrawearable sportswear pieces in a kaleidoscope of fresh optimistic colour. In particular, it appeared that designers were going through a rather blue period with the spring runways awash in a wave of rich royal blue. Jil Sander, Prada, Emilio Pucci and Céline all caught on to cobalt, with the electric shade boldly punctuating all of their collections. Whether slipping into attention-grabbing dresses, saturated separates or high-voltage azure accents, the blue hue—brighter than navy and deeper than royal blue—will undoubtedly make a chic colour statement. Show off your blue streak and add a dash of cobalt to your spring look.