The present invention relates to radiation curable coating composition (I) consisting essentially of: —from 20 to 95 wt % of one or more (meth)acrylated compounds (a), from 5 to 80 wt % of one or more metal salts of a C10 to C22 fatty acid (b), and—optionally, from 0 to 10 wt % of one or more additives (c), wherein the wt % of compounds (a) to (c) add up to at least 95%, preferably add up to 100%. Compositions of the invention are compatible with a whole range of radiation curable materials and with the standard additives like the standard matting agents. Compositions of the invention permit to obtain a dead matt effect using lower amounts of matting agents like silica and/or waxes. Dead matt effects can be obtained over a wide range of coating thicknesses.