Process for trichromatic dyeing or printing

A process for dyeing or printing natural or synthetic polyamide fibre material by the trichromatic technique, which comprises using at least one blue-dyeing dye of formula (1) ##STR19## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.4 alkanoylamino, ureido or halogen, together with at least one red-dyeing dye of formula (3) ##STR20## wherein R and R' are each independently of the other hydrogen or C.sub.1 -C.sub.4 alkyl which is unsubstituted or substituted by hydroxy, C.sub.1 -C.sub.4 alkoxy, halogen or sulfato, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are each independently of one another hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.4 alkanoylamino, ureido or halogen, and X.sub.1 is halogen, and together with at least one yellow- or orange-dyeing dye of formula (4) or (5) ##STR21## wherein R and R' are each independently of the other hydrogen or C.sub.1 -C.sub.4 alkyl which is unsubstituted or substituted by hydroxy, C.sub.1 -C.sub.4 alkoxy, halogen or sulfato, X.sub.2 and X.sub.3 are halogen, and R.sub.9, R.sub.10, R.sub.11, R.sub.12, R.sub.13, R.sub.14, R.sub.15 and R.sub.16 are each independently of one another hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, uriedo, halogen or C.sub.2 -C.sub.4 alkanoylamino or C.sub.1 -C.sub.4 alkoxycarbonylamino which may be substituted in the alkyl moiety by C.sub.1 -C.sub.4 alkoxy or hydroxy.