1. the quality or property of a dyed or colored material that resists fading or running when exposed to light, washing, or other conditions
Usage: uncountable noun; commonly used in textile and fabric industries

Examples

• The colorfastness of this fabric makes it ideal for outdoor furniture.
• We tested the colorfastness of the dye by washing the shirt multiple times.
• High-quality fabrics are known for their excellent colorfastness.
• The manufacturer guarantees the colorfastness of their clothing for at least 50 washes.
• Colorfastness is an important factor when choosing dyes for commercial textiles.
• This red dye has poor colorfastness and will fade quickly in sunlight.