31437332cobalt bluePT2026-03-30 20:57:55UF31437337azure cobaltNDUF31437338bleu de cobaltNDUF31437339blue, cobaltNDUF31437340cobaltNDUF31437341olympia blueNDUF31437333Hungary blueNDUF31437334Thénard's blueNDUF31437335Vienna blueNDUF31437336Vienna ultramarineNDBT31411022synthetic inorganic blue pigmentPTNT31456178Leithner's bluePTNT31456181cobalt oxidePTNT31456183zafferPTRT31411030new bluePTRT31456205Oriental bluePTRT31456207soluble bluePTRT31456209steel bluePTRT31456211Turnbull's bluePT