Your winter hair color inspiration is here. Cardi B’s cobalt-blue bob is turning heads and sparking a bold trend for the colder months. Dubbed the 'Jean-ius' blue bob, this look blends daring color with sleek texture, making it a must-see hairstyle for 2025. See the photos and get inspired to try a vibrant winter hair color that pops in photos and on screen. Learn how to recreate the look at home or with a stylist, plus tips for keeping blue hues vibrant during chilly weather. We cover shade selection, flattering cuts, and maintenance to help you achieve a salon-worthy blue bob that suits your face shape. For game day and beyond, pair this standout hairstyle with stylish, sports-ready outfits and entertainment-inspired accessories. Explore our sports & entertainment essentials to get ready for game day while staying on-trend with winter hair color ideas.