Basic Blue 3 is widely used as a dye in various industries. In the textile sector, it is applied for coloring fabrics, particularly those made of acrylic, wool, and silk, due to its strong affinity for these materials. It is also employed in the paper industry for tinting paper products, providing a vibrant blue hue. Additionally, Basic Blue 3 finds use in biological staining, where it helps in highlighting cellular structures under a microscope. Its application extends to the leather industry for dyeing leather goods, ensuring a consistent and rich color. In some cases, it is utilized in the production of inks and coatings, contributing to the visual appeal of printed materials and painted surfaces.