Ink sets can include a plurality of aqueous inks. In one embodiment, a first ink can include a magenta dye and a magenta pigment. A second ink can include a cyan pigment, and a third ink can include a yellow pigment, wherein the second and third inks are substantially devoid of dye. The inks can independently include 2-pyrrolidone or 2-hydroxyethyl-2-pyrrolidone and an additional solvent selected from a glycol, a second pyrrolidone, and mixtures thereof. In another embodiment, an aqueous ink-jet ink can comprise a pigment and a liquid vehicle including water, 2-pyrrolidone, 2-hydroxyethyl-2-pyrrolidone, tetraethylene glycol, and 1,6-hexanediol.