When the U.S. Air Force first became an independent service in 1947 airmen continued to wear uniforms nearly identical to the U.S. Army. The first Air Force-specific blue dress uniform, introduced in 1949, was in Shade 1683, also dubbed "Uxbridge Blue" after the former Bachman-Uxbridge Worsted Company. It was cut similarly to Army service dress uniforms, with a four button front and four coat pockets. An Eisenhower jacket, also inherited from the Army Air Forces but in Shade 1683, was an optional uniform item; it was phased out by 1965. In the early 1960s, the blue uniform transitioned to a new and slightly updated version known as Shade 1084. The shades were updated again in the 1970s, with the coat and trousers becoming Shade 1549, while the shirt is Shade 1550.