To obtain a new dye compound having high fixability and bonding stability to a fiber, enabling easy washing of non-fixed part, capable of giving a dyed product having excellent fastness to light and moisture and suitable for the dyeing or printing of textile material.

This objective dye is a compound expressed by formula [A1 and A2 are each a group of a dye such as monoazo, polyazo, anthraquinone, dioxazine, pohtalocyanine or formazan dye; R1 to R4 are each H or a (substituted) 1-4C alkyl; Y1 and Y2 are each a halogen, carboxypyridinium, a (substituted) amino or a heterocyclic group bonded through N atom; (n) is 1-7], e.g. 1,2-propylene glycol bis[2({4-[3(6-oxo-5-carbamoyl-2hydroxy-4- methylpyridin-2-yl)azo-2,4disulfophenyl]amino-6chloro-1,3,5-triazin-2-yl}amino) propyl] ether.