Disclosed are olymeric dye of formula (1a), (1b), (1c), A and B, independently from each other represent a polymer backbone X1 and X2 independently from each other are a linkage group selected from -C1-C30alkylene- or -C2-C12alkenylene-, which is interrupted and/or terminated at one or both ends by one or more than one -S-, -N-, -N=-, -N(R5)-, -S(O)-, -SO2-, -(CH2CH2-O)1-5-, -(CH2CH2CH2-O)1-5-, -C(O)-, -C(O)O-, -OCO-, (II), -CON(R1)-, -C(NR1R2)2-, -(R1)NC(O)-, -C(S)R1- or an optionally substituted, saturated or unsaturated, fused or non-fused aromatic or nonaromatic (heterocyclic) bivalent radical optionally comprising at least one heteroatom a saturated or unsaturated, fused or non-fused aromatic or nonaromatic bivalent radical comprising at least one heteroatom, which is optionally substituted by C1-C30alkyl, C1-C30alkoxy, C2-C12alkenyl, C5-C10aryl, C5-C10cycloalkyl, C1-C10alkyl(C5-C10arylene), hydroxy or halogen R1 and R2 independently from each other are hydrogen unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C1- C14alkyl C2-C14alkenyl C6-C10aryl C6-C10aryl-C1-C10alkyl or C5-C10alkyl(C5-C10aryl) Y1 and Y2 independently from each other are a residue of an organic dye or hydrogen wherein at least one of Y1 and Y2 is a residue of an organic dye An1, An2 and An3, independently from each other are an anion a and b independently from each other are a number from 1 to 3 m is a number from 0 to 5000 n is a number from 0 to 5000 and p is a number from 1 to 5000 wherein the sum of m + n + p ≥ 3. The dyes are distinguished by their depth of shade and their good fastness properties to washing, such as, for example, fastness to light, shampooing and rubbing.La présente invention concerne des colorants polymères de formules (1a), (1b), (1c), dans lesquelles A et B représentent indépendamment lun de lautre un squelette polymère X1 et X2 représentent indépendamment lun de lautre un groupe de liaison choisi parmi
