Provided is a polymerizable UV- absorbing colorant monomer which exhibits excellent stability under alkaline conditions and which is for a polymer that is useful as an intraocular lens material. A compound represented by general formula (1) is used as a polymerizable UV absorbing colorant monomer for a polymer for an intraocular lens material. Formula (1) (In general formula (1) , R1 is a hydrogen atom , a hydroxy group, a carboxy group, an alkyl group having 1- 8 carbon atoms, an alkoxy group having 1 -8 carbon atoms , a sulfonic acid group or a benzyloxy group , R2 is a hydrogen atom , a hydroxy group or an alkoxy group having 1- 4 carbon atoms, and R 3is represented by formula (2). Formula (2) (In general formula (2), R4 is a hydrogen atom or a methyl group. In addition , R 5is a single bond or an optionally substituted alkylene group having 1 -4 carbon atoms).
