6,6′-Dibromoindigo is an organic compound with the formula (BrC6H3C(O)CNH)2. A deep purple solid, the compound is also known as Tyrian purple, a dye of historic significance. Presently, it is only a curiosity, although the related derivative indigo is of industrial significance. It is produced by snails of the family Muricidae.
The pure compound has semiconductor properties in the thin film phase, which is potentially useful for wearable electronics, and has better performance than the parent indigo in this context.
