The Effect of Color Depth on Color Sensitivity in Wool Dyeing with Weld Natural Dye

The color sensitivity of the dyeing recipe is one of the most important parameters for controlling the dyeing process. This work studied the effect of color depth on the color sensitivity of a recipe of wool dyeing with weld natural dye. For this purpose, the woollen yarn was dyed with weld at low and high color depth using pre-mordanting method. The color sensitivity of the dyeing recipe was evaluated by measuring the color depth (K/S), color difference, and color sensitivity coefficient. The color sensitivity coefficient was measured by 10 % change in parameters of the dyeing recipe, such as dye concentration, mordant concentration, temperature, time, pH, and L.R. Also, the simultaneous color sensitivity of two, three, four, five, and six parameter combinations were measured by experimental and computational methods. The measured color sensitivity by the computational method was higher than the experimental method. In general, the color sensitivity at low color depth is more than high color depth.