Fashion Blue Mood By InStyle Editors InStyle Editors Facebook Instagram Twitter Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. InStyle's editorial guidelines Updated on August 15, 2013 @ 10:57AM Pin Share Tweet Email Trending Videos Photo: Brian Henn Blue Mood 01 of 07 REASONS TO LOVE IT Imaxtree (4) Unlike red sometimes does, this intense color makes a statement without being brash. It turns a cozy sweater, notch-color coat, or swingy dress into something startlingly original. No wonder cobalt has edged out olive and rust as fall's most prominent hue this year. HOW TO WORK ITThese deep blues pop against white and are rich and sophisticated with black. So add touches of one or both to an ensemble: Layer a long blue blazer over black pants, and wrap a white leather belt around your waist, for example. Purists should embrace it in its most vibrant form (see J.Mendel's elegant gown), while those who are color-shy can slip into a silky top or sculpted heels. With its cool undertones, cobalt complements every complexion, from porcelain to dark chocolate. Do a natural lip, and define eyes with a dark liner-plus a smokey shadow for drama at night. Photos: (left to right) J. Mendel, Valentino, Michael Kors, Missoni 02 of 07 Ivy & Blu Maggy Boutique Dress Brian Henn Faux-leather, $195; neimanmarcus.com. 03 of 07 Pink Tartan Sweater Brian Henn Cotton-blend, $325; nordstrom.com. 04 of 07 Isaac Mizrahi Heels Brian Henn Suede, $135; bloomingdales.com. 05 of 07 Marc by Marc Jacobs Top Brian Henn Silk, $275; marcjacobs.com for stores. 06 of 07 Rag & Bone Skirt Brian Henn Triacetate-polyester with lambskin trim, $395; at Owen, 212-524-9770. 07 of 07 Cut 25 By Yigal Azrouël Blouse Brian Henn Silk, $275; neimanmarcus.com for stores.