Table 1.
Correlation between Δ
E
value and sensual difference.
Total color difference (Δ
E
)
Sensual difference
0 ~ 0.5
Trace
0.5 ~ 1.5
Slight
1.5 ~ 3.0
Noticeable
3.0 ~ 6.0
Appreciable
6.0 ~ 12.0
Much
over 12.0
Very much