Disclosed is an organic light-emitting element. The organic light-emitting element comprises a pair of electrodes and an organic EL layer that is arranged between the pair of electrodes and contains at least an organic light-emitting layer. The organic light-emitting element is characterized in that: the organic light-emitting layer contains an electron-transporting host material and at least a first guest material and a second guest material; the first and second guest materials respectively have an emission peak within the blue to blue-green region; and the light-emitting layer contains at least one first guest material that has an ionization potential (IPG1) and an electron affinity (AFG1) satisfying the relation represented by the mathematical formula (1) below with respect to the ionization potential (IPH) and the electron affinity (AFH) of the host material. The organic light-emitting element has a remarkable advantage such that a high efficiency is able to be achieved without affecting the driving voltage. IPH = IPG1 and AFH < AFG1 (1).