Provided is a coating composition comprising (a) a matrix mixture, comprising (i) one or more urethane multi(meth)acrylates (ii) one or more non-urethane multi(meth)acrylates (iii) optionally one or more mono(meth)acrylates (iv) one or more initiators; (b) zirconia,; and wherein the weight ratio of (a) to (b) is from 0.06:1 to 2.8:1, and wherein the amount of (a) plus the amount of (b) is 1% to 100% by weight based on the weight of said coating composition. Also provided is a coated article formed by a process comprising (A) applying a layer of the coating composition to a surface of a substrate, (B) removing said solvent from said layer of the coating composition, and (C) curing, or allowing to cure, said layer of the coating composition.