The central imidazole ring of the title compound, C24H20Cl2N2O, is twisted with respect to with the planes of the 2,6-dichlorobenzene and two phenyl rings, making dihedral angles of 74.06 (18), 28.52 (17) and 67.65 (18), respectively. The phenyl ring not adjacent to the N -bonded 2-hydroxypropyl group shows the greatest twist, presumably to minimize steric interactions. In the crystal, molecules are linked by O-H center dot center dot center dot N and C-H center dot center dot center dot O hydrogen -bond contacts into chains along the a -axis direction. The series of parallel chains form a two-dimensional sheet approximately parallel to the be diagonal. In addition, C-H center dot center dot center dot pi interactions are observed between the sheets. The atoms of the 2-hydroxypropyl group and the N atom of the 1H-imidazole ring to which it is bonded are disordered over two sets of sites, with an occupancy ratio of 0.722 (5):0.278 (5). The structure was refined as an inversion twin.