this application relates to thiophene azo carboxylate dyes for use as hueing agents , laundry care compositions comprising such dyes that may serve as hueing agents , processes for making such dyes and laundry care compositions and methods of using the same . the aforementioned dyes contain a formally charged moiety and are generally comprised of at least two components : at least one chromophore component and at least one polymeric component . suitable chromophore components generally fluoresce blue , red , violet , or purple color when exposed to ultraviolet light , or they may absorb light to reflect these same shades . such dyes are advantageous in providing a hueing effect , for example , a whitening effect to fabrics , while not building up over time and causing undesirable blue discoloration to the treated fabrics . such dyes are also generally stable to bleaching agents used in laundry care compositions .