Thus, from the shapes of the acceptability tolerance of the 4 CIE standard illuminants, it is not possible to tell that the CIE 1976 (L*u*v*) space is more uniform than the CIE 1960 UCS diagram.

• CIE标准照明体D_(55)和D_(75)的允许范围在CIE1960UCS图上更接近圆形,而标准照明体A和D_(65)的允许范围在CIE1976(LUV)空间图上更接近圆形。