1. The quality or state of being colorfast; the ability of a dyed or colored material to retain its color without fading or running when exposed to light, washing, or other conditions.
Usage: Plural form of colorfastness; Commonly used in textile and fabric industries

Examples

• The manufacturer tested the colorfastnesses of different fabric dyes before production.
• High-quality textiles are valued for their superior colorfastnesses.
• We compared the colorfastnesses of synthetic and natural dyes in our experiment.
• The colorfastnesses of these garments make them ideal for frequent washing.
• Consumers often check product labels for information about colorfastnesses.