Table 1.

The colour properties of the dye I-WB at wet-scrub cycles.

Film	dye I-WB standard	dye I-WB after 200 cycles
L*	70.8 ± 0.2	70.4 ± 0.1
a*	11.2 ± 0.2	15.2 ± 0.2
b*	− 8.6 ± 0.1	− 6.5 ± 0.1
C*	14.1 ± 0.2	16.6 ± 0.1
h*	5.6 ± 0.05	5.9 ± 0.1
ΔE*	–	4.5 ± 0.2
ΔC*	–	2.5 ± 0.2
Δh*	–	3.7 ± 0.1
K/S	17.9	17