Fiber-reactive triphenodioxazine dyes

A dye of the following formula:

• ##STR38## wherein:
• ##STR39## A is a covalent bond or a substituted or unsubstituted arylene, alkylene or arylene-alkylene group where the alkylene moiety may be optionally interrupted by a hereto atom;
• Y is the vinyl group or the .beta.-chloroethyl group and;
• X is selected from H or Z;
• K is independently selected from SO.sub.3 H and COOH;
• R and R.sub.1 are independently selected from hydrogen and substituted or unsubstituted alkyl of 1 to 6 carbons;
• R.sub.2 and R.sub.3 are independently selected from hydrogen and substituted or unsubstituted alkyl or alkoxy of 1 to 6 carbons;
• T is independently selected from hydrogen, Cl, Br, a substituted or unsubstituted C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, phenyl or phenoxy;
• and
• n is independently selected from 0, 1 or 2.