Table 3.

Color differences of poplar veneers dyed with Acid Red GR and chitosan-based biopolymer dye.

Color Parameters	Dye	Chitosan-Based Biopolymer Dye	Magnitude 1
L*	70.98 ± 1.87	68.96 ± 1.17	−2.03 ± 2.04
a*	19.37 ± 2.19	22.73 ± 2.01	3.36 ± 1.95
b*	19.50 ± 1.26	20.35 ± 0.81	0.86 ± 0.99
ΔE* 2	–	4.82 ± 0.62	–

¹ Magnitude was calculated with Equations (2), (3), and (4); ² ΔE^* was calculated with Equation (5).