In this fast fashion era dyeing is considered as a major cause for the textile pollution. It is also a cause for many deadly diseases due to the poor usage of synthetic dyes and most of the textile industry does not care about the workers and their protective wears and the workers suffer from health hazardous due the emitted effluents that gets emitted from the dyeing process. During the dyeing the synthetic dyes produce strong fumes, and these are highly carcinogenic and while disposing the dye there are proper treatment for the disposal otherwise this will create a huge damage to the environment. The present study focuses on colour ant that is extracted from clitoriaternatea flower on cotton fabric has been studied using alum. The wash, rub, light, and perspiration fastness of the dyed samples have been tested. It is discovered that clitoriaternatea dye can be successfully used for the dyeing of cotton to obtain a wide range of colours by using various mordant. In regard to colour fastness test samples exhibit excellent fastness to sunlight, washing, crocking, perspiration, and saliva.