Deep black dye mixtures of fiber-reactive azo dyes and use thereof for dyeing hydroxy- and/or carboxamido-containing fiber material

A dye mixture comprising one or more disazo dyes conforming to the general formula (1), one or more monoazo dyes conforming to the general formula (2) and optionally one or two monoazo dyes conforming to the general formula (3) ##STR11## wherein:

• R.sup.1 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;
• R.sup.2 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;
• R.sup.3 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;
• R.sup.4 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;
• R.sup.5 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;
• R.sup.6 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;
• Y is in each instance, independently of the others, vinyl or is ethyl which is substituted in the .beta.-position by a substituent which is eliminated by the action of an alkali, forming the vinyl group;
• M is hydrogen or an alkali metal;
• the dye, respectively dyes, of the general formula (1) or of the general formulae (1) and (3) being present in the mixture in an amount of from 50 to 95% by weight, and the dye, respectively dyes, of the general formula (2) being present in the dye mixture in an amount of from 5 to 50% by weight, while the dyes of the formulae (1) and (3), if a dye or dyes of the general formula (3) being present in the dye mixture, are present in relation to one another of 99.5% to 94% in respect of the disazo dye(s) of formula (1) and of 0.5 to 6% by weight in respect of the monoazo dye(s) of formula (3), calculated on the total amount of the dyes of formulae (1) and (3).