|See also:||bloodswap, Dominance Hierarchy|
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The Hemospectrum is a term from Homestuck canon that refers to the caste system in the troll society. A troll's social status is determined by their blood color. In fanworks, bloodswap AUs, in which the blood colors of the characters have been changed, and stories in which the caste system have shifted are very popular. There are also stories in which trolls of lower caste are slaves.