Ultramarine blue (pigment blue 29) bụ ụcha na-acha anụnụ anụnụ nwere ọtụtụ ojiji.N'ihe gbasara agba agba, a na-eji agba anụnụ anụnụ, rọba, ink, na tapaulin eme ihe;n'ihe gbasara ịcha ọcha, a na-eji ya eme akwụkwọ, ncha na ntụ ntụ, starch, na ngwaahịa textile.