An inkjet printing method for producing images durable for outdoor usage includes the steps of: a) inkjet printing on a substrate a UV curable colorless primer including monofunctional monomers in a range of 40 wt % to 65 wt % based on the total weight of the UV curable colorless primer; b) at least partially UV curing the inkjet printed UV curable colorless primer; and c) inkjet printing on the at least partially cured UV curable colorless primer one or more UV curable color inkjet inks including monofunctional monomers in a range of 30 wt % to 60 wt % based on the total weight of the UV curable color inkjet inks; wherein a ratio of the wt % monofunctional monomers in the UV curable colorless primer over the wt % monofunctional monomers in the one or more UV curable color inkjet inks is between 0.65 and 2.10.