Theoretical models for classical Cepheids. V. Multiwavelength relations

From a theoretical study based on nonlinear, nonlocal and time-dependent convective pulsating models at varying mass and chemical composition, we present the predicted Period-Luminosity, Period-Color, Color-Color and Period-Luminosity-Color relations in the BVRIJK bands for Classical Cepheids. All the theoretical relations are, in various degrees, metallicity dependent and the comparison with observed data for MC and Galactic Cepheids show a fair agreement which supports the validity of the pulsating models.