Widely used in the textile industry for dyeing wool, silk, and nylon, providing a bright blue shade with good wash fastness. Commonly applied in printing inks and used in paper dyeing due to its strong color yield and solubility in water. Also utilized in the production of colored smoke and in some industrial cleaning formulations as a tracer dye. Its stability under alkaline conditions makes it suitable for detergents and cleaning agents where visual tracking is needed.

Note: Usage is regulated in some countries due to potential environmental impacts if wastewater is not properly treated.