Precise Color Communication
  |
 |
 |
| The L*u*v* color space (also referred to as the CIELUV space) is one of the uniform color spaces defined by the CIE in 1976. The values of L*, u*, and v* are calculated according to the formulas below: |
 |
 |
|
where Y: Tristimulus value Y (tristimulus value 
can also be used.)u', v': Chromaticity coordinates from the CIE 1976 UCS diagram Yo, u'o, v'o: Tristimulus value Y (or
) and chromaticity coordinates u', v' of the perfect reflecting diffuser.
|
| Color difference ∆E*uv in the L*u*v* color space, which indicates the degree of color difference but not the direction, is defined by the following equation: |
 |
|
where ∆L*, ∆u*, ∆v*: Difference in L*, u*, and v* values between the specimen color and the target color |
 |
||
|
||
 |
7/12 |
 |
|
||
|
