Klein blue shirt can be worn with light blue jeans, which is the most classic way to wear it, weakening the dull feeling of dark blue and appearing refreshing and casual. It can also be worn with black trousers, which is versatile, but it is easy to wear a dull feeling and needs to work hard on choosing styles. It can also be paired with white sweatpants to make people shine at the same time, showing a pure temperament.
InternationalKleinBlue, one of the blue series, is dark blue, which is a mixture of French artist YvesKlein's neo-realism, and was named after the first patent. Also known as sapphire blue.