Need a dark colour that is flawless day or night without breaking the stylebook’s rules regarding black? If you are looking for a T-shirt in a colour that you can wear anytime, day or night, than navy plain T-shirts are the choice for you. River Island has navy plain T-shirts for men in many styles and fabrics, allowing you the freedom to create a look that is totally you. Wear the navy chunky rib muscle fit crew neck T-shirt dressed down with shorts for an easy daytime look or dressed up with jeans and a sports jacket to look sharp.