Colour fastness

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
On the upper and lower part of the panel the former color is visible. This panel's dye is not color fast.

Color fastness is a term—used in the dyeing of textile materials—that characterizes a material's color's resistance to fading or running. The term is usually used in the context of clothes. The first known use of the word colorfast was in 1916.[1] In general, clothing should be tested for colorfastness before using bleach or other cleaning products.[2]

Light fastness, wash fastness, and rub fastness are the main forms of color fastness that are standardized. The light fastness of textile dye is categorized from one to eight and the wash fastness from one to five, with a higher the number indicating better fastness.[3]


  1. ^ "colorfast". Retrieved December 1, 2011. 
  2. ^ "Colorfastness". Retrieved December 1, 2011. 
  3. ^ Oger, B. (1996). "Fastness to Light and Washing of Direct Dyes for Cellulosic Textiles". Studies in Conservation. 41 (3): 129. doi:10.2307/1506527. JSTOR 1506527. 

External links[edit]