抄録
For dyed textile articles, the depth of shade is usually classified into dark, medium and light colors, but these terms are very qualitative and their definitions are not clear. However, the depth level has such an important meaning in relation to the tinctorial power of colorants and various fastnesses of dyeings that it should be defined strictly and quantitatively.
The authors compared the visual evaluation of depth level of the systematically composed color specimens with some customary standards of depth level being used in textile industry and reached the conclusion that dark, medium and light colors should have the depth values of C*=10.86, C*-5.43 and C*=2.72, respectively, as the representative values.
It was also shown that the whole range of depth of shade can be divided more rationally by a four classification system, employing dark, medium, light and pale colors than by the usual three classification system.
