Table 4.
Color changes of the dyed regenerated-woody fiber with various concentration of commercial indigo dye

Concentration of Indigo (%, O.W.F.)	λmax (nm)	K/S	Hunter's Value				Munsell's Value
			L*	a*	b*	ΔE*	H		V		C
							Before	After2)	Before	After2)	Before	After2)
0	450	0.73	76.05	5.21	22.18		0.2Y	0.6Y	7.52	6.68	3.45	5.27
1	650	0.43	69.49	-4.72	16.89	13.03	2.0GY	3.9Y	6.84	6.13	2.30	3.40
3	650	2.40	53.09	-8.66	2.09	33.52	9.4G	7.8GY	5.15	4.75	1.70	1.69
5	650	6.69	38.96	-6.84	-8.67	49.73	7.9B	3.9B	3.75	3.60	2.49	1.78

Dyeing conditions ; Temperature : 60 °C, Time : 60 minutes
After of 24hr ultraviolet irradiation treatment.