Place 1 Purple Dye, 1 Pink Dye, and 1 White Dye in a crafting grid
Or place 1 Blue Dye and 1 Red Dye together to make Purple Dye, then combine Purple Dye with Pink Dye and White Dye
Use 1 Purple Dye and 1 Pink Dye together to make Magenta Dye
Or place 1 Purple Dye and 1 Bone Meal together to make Magenta Dye
Or place 1 Pink Dye and 1 Blue Dye together to make Magenta Dye