In the title molecule, C27H26Cl2N2O2, the chloro-substituted benzene rings make dihedral angles of 83.29 (9) and 80.81 (9) with the benzene ring of the tetrahydroquinoline group. The dihedral angle formed by the two chloro-substituted benzene rings is 40.87 (12). The six-membered N-containing ring is in a half-chair conformation. In the crystal structure, intermolecular N—HO hydrogen bonds link molecules into centrosymmetric dimers.