Direct Blue 2 is widely used in the textile industry as a dye for coloring cotton, rayon, and other cellulosic fibers. Its ability to bind directly to these materials without the need for a mordant makes it a convenient and efficient choice for producing deep blue shades. Additionally, it is employed in paper manufacturing to impart color to various types of paper products. In some cases, it is also utilized in biological staining techniques for microscopic analysis, aiding in the visualization of cellular structures. Its stability and vibrant color make it a preferred option in industries requiring consistent and long-lasting dyeing results.