Definitions for "Color Fastness"
The resistance of a cloth's color to various situations, for example washing/abrasion, or light. For wash/abrasion these are measured on standard scales of 1-5, where 5 signifies no visible change and 1 substantial change. For light these are measured on a scale of 1-8, where 8 represents the highest fastness,1 the lowest.
That property of a pressure sensitive label to retain its color in normal storage or to resist change in color when exposed to light, heat or other deleterious influences.
Term used to denote the resistance of a material to change in any of its color characteristics. (Usually refers to a dye's permanence after washing, exposure to light, etc.