In the title compound, C21H19ClN2O2, the benzene ring and the naphthalene ring system are oriented at a dihedral angle of 65.24 (10)°. In the crystal, N-H⋯O, C-H⋯N and C-H⋯O hydrogen bonds link the mol-ecules, forming chains along the b-axis direction. Further C-H⋯O hydrogen bonds link the chains, forming corrugated sheets lying parallel to (10-1).