Blue Tattoos

Blue Tattoos first appear in Golden Son as the distinctive pale-blue mathematical formula markings that identify Orion’s Blue-caste heritage. Their significance grows as Orion rises from a tactical officer to a fleet commander, the tattoos becoming a visual shorthand for her intellect and loyalty to Darrow’s cause. Across the later books the same markings serve as both a rallying emblem for the Blue crews who defect to the Rising and a grim reminder of the rigid color hierarchy the war seeks to dismantle.