To obtain a cationic polymerizeble ultraviolet ray curable silicone composition which shows good pigment dispersion and excellent ultraviolet ray curability and enables easy adjustment of kinds of colors and color density, and a peelable base material.

The cationic polymerizable ultraviolet ray curable silicone composition contains (a) a polyorganosilane having at least 2 epoxy functional groups in the molecule, (b) a pigment having an average diameter of a primary particle of 1 nm to 1,000 nm and (c) an onium salt-based photo-initiator. The peelable base material has a cured layer of the cationic polymerizable ultraviolet ray curable silicone composition formed on a base material.