Vat dyes are insoluble in water and are included with water-soluble alkali metal salt. The colors have 98% of purity level and are extensively demanded in the industries of paints, ink and textile. Vat dyes are suited for the coloring of textile, plastic, paint and ink. The colorants are water-insoluble and are appropriate for the application purpose. These are transformed in solubilized formula and then oxidized. The colors are widely used for the coloring process of cotton yarns such as denims and jeans.