Navy-blue dye mixture of fiber-reactive azo dyes

A dye mixture comprising one or more dyes conforming to the formula (1) and one or more dyes conforming to the formula (2)

• wherein
• R1, R2, R3 and R4 are identical to or different from each other, are hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;
• R5, R6, R7 and R8 are identical to or different from each other, are hydrogen, methyl, ethyl, methoxy or ethoxy;
• Y is in each instance independently of the others vinyl, β-chloroethyl, β-thiosulfatoethyl or β-sulfatoethyl;
• a is the number 0 or 1;
• b is identical or different and is the number 0 or 1 with the proviso that at least one b is 1;
• M is hydrogen or an alkali metal,
• Z1 and Z2 are independently selected from the fiber-reactive groups of the formulae (3a) (3b), (3c), (3d), and (3e)
• where Q is chloro, cyanamido, hydroxy, alkoxy of 1 to 4 carbon atoms, phenoxy, sulfophenoxy, pyridino, carboxypyridino, carbamoylpyridino or a group of the general formula (4a) or (4b),
• wherein
• R9 is hydrogen, alkyl of 1 to 4 carbon atoms, cyclohexyl, alkoxy of 1 to 4 carbon atoms, hydroxyalkyl of 2 to 4 carbon atoms, sulfoalkyl of 1 to 4 carbon atoms, phenyl unsubstituted or substituted by 1 to 2 substituents selected from the group of substituents consisting of chlorine, bromine, methyl, ethyl, methoxy, sulfo and carboxy, or is monosulfonaphthyl, disulfonaphthyl, alkyl of 2 to 6 carbon atoms substituted by phenyl, the alkyl moiety may be interrupted by a hetero group selected from O, S, NH, SO2, CO, CO—NH or NH—CO, and the phenyl substituent thereof may be substituted by 1 to 2 substituents selected from the group consisting of chlorine, bromine, methyl, ethyl, methoxy, sulfo, and carboxy,
• R10 has one of the meanings given for R9,
• W is arylene, alkylene or alkylene-arylene, each unsubstituted or substituted, or being of 2 to 6 carbon atoms, if interrupted by a hetero group,
• Y is defined above and,
• n is the number 1 or 2 and the proviso that the dye of the formula (I) contains exactly two reactive groups selected from SO2Y, Z1 and Z2, wherein one of said reactive groups is on each phenyl substituent.