Aqueous inkjet ink compositions are useful in inkjet printing processes and can be used individually or as part of an inkjet ink set. Each aqueous inkjet ink composition has a dynamic viscosity of 5 centipoise (5 mPa-sec) or less at 25° C., and consists essentially of: (a) a polymer-dispersed pigment colorant at 0.9-6 weight %; (b) a composition consisting of compounds represented by the following Structure (I): HO—CH2—CH2—R   (I) wherein R is a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenoxy group, at 0.5-2 weight %; (c) a water-soluble humectant, co-solvent, or both, at than or equal to 20 weight %. Each polymer-dispersed pigment colorant has a 50th percentile particle diameter of less than 70 nm and a 95th percentile particle diameter of less than 150 nm, as measured using a dynamic light scattering particle size analyzer.