Reactive HE Dyes are widely used for dyeing cellulosic fibers employing exhaust dyeing process at the temperature of 80-85C. These dyes are suitable for dyeing of polyester / cotton and polyester / viscose blends. They are developed to exhibit high substantively along with excellent fixation and tinctorial value. They are ideal for post mercerization owing to good light fastness and brilliant washing fastness behavior. In addition to this, they also ensure excellent reproducibility in combination shades. They are highly compatible to different types of printing machines.