Cerulean

Cerulean blood, alternatively referred to as Cobalt or Blue, is considered the lowest highblood class on the hemospectrum, sitting between Teal and Indigo. Cerulean bloods get a +HUB/-APP bonus.

Background
Everyone better watch the fuck out because you got their number, all of their numbers, fuck them for trying to keep their precious numerals away from you! Everything everyone else has? It's yours. Every opportunity? Yours. All the money and bitches? Why would you look at that, YOURS!!!!!!!! The life of a Cerulean blood is a volatile one— they are the future spymasters, mercenaries, and thieves of the Empire. As the lowest of the highbloods, they find their lives in a pretty sweet spot— high enough to get away with anything, low enough to do what they want. And they do both in spades. Chaotic, ambitious, and dangerous, if there's one thing any troll of any caste can agree on, it's that you do NOT mess with a Cerulean blood. You are the spiderbitch, it's you. - Subgrubs & Snazzards, pg. 105