The application relates to agents for dyeing keratin fibers. The agent can be present in a cosmetic carrier and includes at least one compound of formula (I) and/or a physiologically compatible salt of this compound, in which R1 is a C1-C4 alkyl group, R2 is a hydrogen atom, a C1-C8 alkyl group, a C2-C6 alkenyl group, a C1-C6 hydroxyalkyl group, a C2-C6 polyhydroxyalkyl group, a C1-C6 alkoxy group, a C1-C6 alkylamino group, a di-C1-C6 alkylamino group, a C1-C6 polyalkoxy group, a C1-C6 alkylamido-(C1-C6) alkyl group, wherein the amide function can be substituted by one or two groups X, or is an aryl group, Y is an NH2 or an OH group, at least one coupler component selected from 3-amino-2-methylamino-6-methoxypyridine, 3-amino-6-methylphenol, 3-amino-2-hydroxypyridine, 1,3-bis-(2,4-diaminophenoxy)propane, 2,7-dihydroxynaphthalene, 2-methylresorcinol, 2,5-dimethylresorcinol, 4-chlororesorcinol, 3-aminophenol, 2-amino-3-hydroxypyridine, 2-chloro-6-methyl-3-aminophenol, 2,6-dihydroxy-3,4-dimethylpyridine, 2-({3-[(2-hydroxyethyl)amino]-4-methoxy-5-methylphenyl}amino)ethanol, 2-({3-[(2-hydroxyethyl)amino]-2-methoxy-5-methylphenyl}amino)ethanol, 1-methoxy-2-amino-4-beta-hydroxy-ethylaminobenzene (Lehmanns blue), 2,4-diaminophenoxyethanol, 5-amino-4-chloro-o-cresol, 2,4-dichloro-m-aminophenol, 2,6-dihydroxy-3,4-dimethylpyridine and/or a physiologically compatible salt of these compounds.
