Used extensively in the textile industry for dyeing wool, silk, and nylon, providing vibrant blue shades with excellent colorfastness. It is also employed in the paper industry to color various paper products. In biological research, it serves as a staining agent for microscopic analysis, helping to visualize cellular structures. Additionally, it finds application in the food and cosmetic industries as a colorant, though its use is regulated due to safety concerns. Its bright and stable color makes it a popular choice in artistic and creative applications, such as inks and paints.