color hue
9.In 2001,CIE recommend a new color difference formula CIEDE2000. In this experiment, CIE 1976 L*a*b*,CMC and CIEDE2000 color difference formulae are checked and compared making use of thecharacteristic of Munsell color system, which its samples nearby are of equal perceived color differenceand the Munsell hue, chroma and value can be changed independently.

