Emission color tunable single-phased phosphors La7O6(BO3)(PO4)(2): Ce3+, Tb3+, Eu3+ were prepared by a solid state reaction method. The crystal structure, luminescence properties, energy transfer, and co-excitation behavior were investigated in detail. The La7O6(BO3)(PO4)(2): xCe(3+) phosphors emit blue light under the excitation at 228 nm, corresponding to the broad 4f-5d transition of Ce3+. Concentration quenching phenomenon was observed when the Ce3+ ion was x = 0.01. By co-doping the Eu3+ and Tb3+ ions into La7O6(BO3)(PO4)(2): Ce3+ phosphors, the emission color can be tunable from blue to reddish, and then to white. The energy transfer from Ce3+ to Eu3+ and the co-excitation of Ce3+ and Tb3+ have been investigated and discussed. The color coordinate for the La7O6(BO3)(PO4)(2): 0.01Ce(3+), 0.05Tb(3+), 0.05Eu(3+) phosphor is calculated to be (0.3008, 0.3381).