Blue Dye Terraria. Sky blue dye is an item that can be placed in the dye slots of a player's inventory to alter the colors of worn armor or vanity items. Players can dye armor, hair, and other cosmetic items in terraria from dyes that can be created, mixed together, or purchased from a dye trader.

When equipped in the dye slot, it will make the player’s armor dark blue and. When applied it seems to show jagged spheres.