The color hue of Marigold-dyed yarns altered with ammonia
after treatment and the reflectance spectra over the wavelength
of 400 nm-700 nm decreases. The L* value showed a decrease
after the Marigold dyed sample treated with 1 % ammonia
solution but a* value (redness) increased. By increasing the
percentage of ammonia, the value of lightness and redness
continue to change. According to C* values, the shade of
Marigold dyed samples treated with ammonia are brighter.
The wicking rate also decreases by ammonia treatment on
the Marigold-dyed yarn. Also there is no difference between
the wash-fastness of untreated and the ammonia-treated dyed
yarns. The color of the Marigold-dyed wool was changed after
wash-fastness test. This created a color hue on the samples
with higher absorbance. The results of the light-fastness also
showed a fading of the Marigold-dyed yarns