An agent for oxidatively dyeing keratinous fibers includes in a cosmetic carrier: (A) 4,5-diamino-1-(2-hydroxyethyl)-1H-pyrazole and/or one of the physiologically acceptable salts thereof as developer (B) at least one p-aminophenol derivative from the group comprising p-aminophenol, 4-amino-3-methylphenol, and/or the physiologically acceptable salts thereof as developer (C) at least one m-diaminobenzene derivative from the group comprising 2-(2,4-diaminophenoxy)ethanol, 1-methoxy-2-amino-4-(2′-hydroxyethylamino)benzene, 2,6-bis(2′-hydroxyethylamino)-1-methylbenzene, and/or one of the physiologically compatible salts thereof as coupler and (D) at least one m-aminophenol derivative from the group 3-aminophenol, 5-amino-2-methylphenol and/or one of the physiologically acceptable salts thereof as coupler, wherein the molar ratio of all the developers of group (A) included in the agent to all the developers of group (B) included in the agent, i.e., the molar ratio (A)/(B), has a value of at least 1.2.
