Disclosed is a hair dyeing composition comprising (a) a dye of formula (1) (b) at least one dye selected from the compounds of formulae (2) wherein D is the radical of a diazo component of the formula (2a) K is the radical of a coupling component selected from aniline derivatives phenol derivatives and a radical of a heterocyclic coupling component X is O— —S— or N(R8)— Y is CH═ —CR15═ or N═ R1, R2, R3 and R4 independently from each other are hydrogen or C1-C4alkyl R5 and R6 independently from each other are hydrogen C1-C4alkyl or C1-C4alkoxy R7 and R9 independently from each other are unsubstituted or OH—, C1-C4alkoxy-, halogen-, amino-, C1-C4-mono or -dialkylamino-substituted C1-C4alkyl R8 is hydrogen or C1-C4alkyl R10 is hydrogen C1-C4alkyl or CN R11 is unsubstituted or OH- or CN-substituted C1-C4alkyl R12 is hydrogen or C1-C4alkyl R13 and R14 independently from each other are hydrogen C1-C4alkyl or C1-C4alkoxy or R13 and R14 together with the nitrogen and carbon atoms joining them together form a 5- or 6-membered ring R15 is hydrogen or C1-C4alkyl and An1− is a colorless anion and (c) a quaternary ammonium salt.
