Abstract: This invention relates to a printing ink set. The ink-jet ink set comprises a plurality of ink-jet inks, each ink being substantially free of water and volatile organic solvents, having a viscosity of 100 mPas or less at 25° C., and comprising at least one radiation-curable monomer, a photoinitiator, and a colorant, wherein the set includes a cyan ink, a magenta ink, a yellow ink, a black ink, and one or more of an orange ink, a green ink and a violet ink. The ink set may also include light CYMK inks. An eight ink set comprising cyan, magenta, yellow, black, orange, green, violet and light magenta inks is also disclosed.