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Match each colour difference component with what it measures.
List I
A. Delta L star
B. Delta C star
C. Delta H star
D. Delta E
List II
1. difference in hue between the pair
2. difference in lightness between the pair
3. the combined total difference
4. difference in chroma between the pair

  • A.A-3, B-1, C-4, D-2
  • B.A-2, B-4, C-1, D-3
  • C.A-4, B-2, C-1, D-3
  • D.A-2, B-4, C-3, D-1

Answer: B

Reporting the components as well as the total shows the direction of the error. A correction can then be aimed at the right attribute. A total alone gives no direction for correction. Components tell the colourist what to change.

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