Disclosed is a color toner for developing an electrostatic latent image, said color toner comprising a binder resin and an azomethine dye having absorption at visible wavelength region or near-infrared wavelength region represented by Formula 1:A=N-B Formula 1wherein said A represents an atomic group, N is a nitrogen atom and said B represents a non-metal atomic group necessary to form an aromatic hydrocarbon ring, a five-membered heterocyclic aromatic ring or a six-membered heterocyclic aromatic ring.