Lead(II) tetrakis(4-cumylphenoxy)phthalocyanine is a Lead(II) coordination complex dye. Lead(II) tetrakis(4-cumylphenoxy)phthalocyanine belongs to the cyanine family of fluorescent dyes that are useful for biomedical imaging. Members of this family have been shown to intercalate with DNA, inhibit Tau aggregation, and associate with certain peptides and other relevant biomolecules.