Disclosed are polymeric dyes of formula (1a), (1b), or (1c) wherein A and B, independently from each other represent a polymer backbone X1 and X2 independently from each other are a linkage group selected from -S-, -S-S-, -N-, - N=-, -N(R5)-, -S(O)-, -SO2-, -(CH2CH2-O)1-5-, -(CH2CH2CH2-O)1-5-, -C(O)-, -C(O)O-,-OCO-, (formula II) -CON(R1)-, -C(NR1R2)2-, -(R1)NC(O)-, -C(S)R1- which may be interrupted and/or terminated at one or both ends by one or more than one -C1C30alkylene- or -C2-C12alkenylene- 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-C10a ryl) Y1 and Y2 independently from each other are a residue of an organic dye selected from hydrazone dyes of formula (1d), wherein Z1, Z2 and Z3, independently from each other are -CR8- or -NR9+- and at least one of Z1, Z2 or Z3 is -NR9+- wherein at least one of Y1 and Y2 is a residue of an organic dye R, R3, R4, R5, R6, R7, R8 and R9 independently from each other are hydrogen hydroxy C1- C5alkyl hydroxy-C1C5alkyl C1C5alkoxy -NO2 -Cl -Br -COOH -SO3H -CN NH2 or CH3-CO-NH- 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 â ¥ 3. The dyes are distinguished by their depth of shade and their goo
