An ink jet textile printing ink composition contains a sulfonic acid group-containing dye having a ligand coordinated to a metal atom, the ligand being represented by Formula (1) below: ##STR00001## wherein at least one of R.sub.1 and R.sub.3 represents SO.sub.3.sup.− or SO.sub.3Y, where Y represents a hydrogen atom, an alkali metal atom, or an alkaline earth metal atom; when not representing SO.sub.3.sup.− or SO.sub.3Y, R.sub.1 and R.sub.3 represent a halogen atom or a hydrogen atom; R.sub.2 and R.sub.4 each independently represent a hydrogen atom, a halogen atom, a sulfo group, a nitro group, an aryl group, a sulfonamide group, a carboxy group, an alkyl group of 1 to 4 carbon atoms, SO.sub.2NHR.sub.5, or COOR.sub.5, where R.sub.5 represents a hydrogen atom or an alkyl group; and X represents a metal atom.

An ink jet textile printing ink composition contains a sulfonic acid group-containing dye having a ligand coordinated to a metal atom, the ligand being represented by Formula (1) below:

##STR00001##

wherein at least one of R.sub.1 and R.sub.3 represents SO.sub.3.sup. or SO.sub.3Y, where Y represents a hydrogen atom, an alkali metal atom, or an alkaline earth metal atom; when not representing SO.sub.3.sup. or SO.sub.3Y, R.sub.1 and R.sub.3 represent a halogen atom or a hydrogen atom; R.sub.2 and R.sub.4 each independently represent a hydrogen atom, a halogen atom, a sulfo group, a nitro group, an aryl group, a sulfonamide group, a carboxy group, an alkyl group of 1 to 4 carbon atoms, SO.sub.2NHR.sub.5, or COOR.sub.5, where R.sub.5 represents a hydrogen atom or an alkyl group; and X represents a metal atom.

The present invention refers to a red-dyeing acid dye mixture comprising a dye of the formula (I) ##STR00001##
and at least one dye of the formula (II) ##STR00002##
a process for its manufacturing and a process for dyeing and printing of natural or synthetic polyamide fiber material in which it used.

The present invention refers to a red-dyeing acid dye mixture comprising a dye of the formula (I) ##STR00001##
and at least one dye of the formula (II) ##STR00002##
a process for its manufacturing and a process for dyeing and printing of natural or synthetic polyamide fiber material in which it used.