Reactive Blue 203 is a high-performance reactive dye mixture that produces a deep, neutral navy blue shade. It is typically a carefully formulated blend of anthraquinone and phthalocyanine dye structures, designed to achieve superior lightfastness. This makes it a top choice for textiles that will be exposed to significant sunlight, such as automotive fabrics, upholstery, and high-quality apparel, ensuring the deep navy colour remains stable and resists fading.
