The Osaka Municipal Metro first service, opened in 1933. Osaka's subway lines are the: Chuo Line (color-coded Dark Green), Imazatosuji Line (Orange), Midosuji Line (Red), Nagahori Tsurumi-ryokuchi Line (Light Green), Sennichimae Line (Pink), Sakaisuji Line (Brown), Tanimachi Line (Purple) and the Yotsubashi Line (Dark Blue). The main hub stations are Namba Station which connects with 3 lines - the Midosuji Line, the Sennichimae Line and the Yotsubashi Line and Umeda