Basic Blue 26, also known as Victoria Blue BO, is a high-strength triarylmethane dye that delivers an intense, reddish-blue shade. It is renowned for its exceptional tinctorial power and brilliance, making it a very economical and effective colorant. Its primary industrial uses are in the manufacturing of printing inks, especially for flexographic and gravure processes, as well as for colouring paper, coatings, and producing carbon paper.