Blue is one of the top colors this year, so a long sleeve top in this shade is definitely a must-have for the season. It complements a basic wardrobe in classic beige and brown perfectly. Combining blue with white, yellow, and shades of gray will also be effective. Jeans, simple pants, and skirts in eco-leather or denim, jackets, and trench coats will be great additions to a close-fitting long sleeve with a round neckline. Our favorite look is a total white outfit with mom jeans, a double-breasted jacket, sneakers, and a blue long sleeve as an accent.