Used as a food coloring agent, particularly in beverages, candies, and baked goods, providing a bright blue hue. Commonly found in sports drinks and powdered drink mixes. Also utilized in pharmaceuticals for coloring tablets and syrups. Serves as a dye in electrophoresis for visualizing protein separation in gels. Employed in medical applications as a surgical stain to aid in tissue visualization during procedures. Used in some eye drops as a diagnostic aid. Functions as a pH indicator in certain analytical tests. Applied in cosmetics and personal care products for coloration. Used in industrial settings as a tracer dye to monitor fluid flow and detect leaks.