an aqueous hair dye preparation comprising an oxidation dyestuff combination of a developer component consisting of a tetraaminopyrimidine derivative or a water - soluble acid addition salt thereof and as coupler , at least one of the following : 2 , 4 - diaminophenol 2 , 4 - diamino - 3 - chlorophenol 2 - amino - 4 - methylphenol 3 - amino - 2 , 6 - dimethylphenol 2 , 2 &# 39 ;, 4 , 4 &# 39 ;- tetrahydroxybenzophenone 2 , 4 - diamino - 6 - methylphenol 3 , 4 - diaminophenetole 1 , 3 - dihydroxy - 5 - methylaminobenzene 1 - hydroxy - 7 - aminonaphthalene 1 - hydroxy - 8 - aminonaphthalene 1 , 6 - dihydroxynaphthalene 2 , 7 - dihydroxynaphthalene 3 , 5 - dimethoxyphenol , as well as a process for dyeing hair by utilizing this oxidation dyestuff combination .