“…Some work also has been reported on color determination and color control in the food industry (3, 4). More recently, colorimetry has been employed in the determination of color stability of pharmaceutical tablet formulations (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) and in the production of color matches for solid dosage forms (19)(20)(21). This work describes the measurement of surface color by tristimulus colorimetry and the determination of color specifications for the routine control of tablet colorants.…”