Line 6, coloured navy blue, (currently known as Plaça Catalunya - Reina Elisenda) is the name of a metro-like commuter train service in Barcelona operated by FGC, and part of the ATM fare-integrated transport system. It links Plaça Catalunya, the city centre, with Sarrià-Sant Gervasi. This Barcelona Metro and Metro del Vallès line shares three stations with FGC L7. 