Team Logo. IK Sirius is a team in the Allsvenskan. They are nicknamed "Blåsvart," which means "Blue-Black." They were the unofficial league champions in 1924. Retrieved from "https://prosportsteams.fandom.com/wiki/IK_Sirius?oldid=15466" Categories: Allsvenskan Teams Teams in Sweden Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.