Top 9 Standards about Colorfastness in Textile



Colorfastness refers to the ability of a material or substance to retain its color when exposed to various environmental factors such as light, heat, water, and other chemicals. It is a measure of a material’s resistance to color fading, bleeding, or transfer to other materials.

Different types of color fastness tests can be performed depending on the specific requirements of the material or product, including tests for light fastness, washing fastness, cracking fastness, and perspiration fastness. Understanding color fastness is important to ensure the longevity and durability of materials and to prevent color transfer or fading.

Terms and Definitions

Colorfastness: The resistance of color against outer influences is called colorfastness. It is distinguished between production colorfastness and usage colorfastness.
Change of color: During colorfastness tests, the change of the color within the visible spectrum between treated and untreated sample is measured. The color change can be caused by changes in color shade as well as color purity.
Bleeding: This term is used to describe the visible color difference between an undyed and untreated control fabric and a similar but treated fabric specimen. The difference is caused by dyestuff migrating from the treated fabric into the control fabric.
Gray scale: Gray scales are photo standards with which color change can be assessed by comparing the contrasts between control fabrics and treated fabrics. Gray scales for the assessment of color changes according to DIN EN 20 105-A02 consist of five pairs of standardized, dull, gray panels with different contrast.
Blue scale: For the assessment of light fastness, a special scale, blue scale is used. It must be prepared a new every time before it is used. It consists of eight standardized color panels (different blue dyes), sorted according to their lightfastness.

Why Colorfastness is So Important?

Colorfastness is an essential factor in the textile and clothing industry as it affects the quality, durability, and appearance of the final product.
Appearance: Color is an important factor in the appearance of clothing and textiles. Consumers expect the colors of their clothing to remain consistent and vibrant over time, and poor color fastness can cause clothing to fade, bleed, or discolor.
Durability: Garments that lose color quickly are more likely to wear out quickly than fabrics with good color fastness. Therefore, fabrics with good color fastness have a longer life.
Quality: Color fastness is an indicator of quality. Fabrics and textiles that retain their color despite exposure to various environmental factors are considered to be of high quality.
Safety: Some dyes and pigments used in textiles can cause skin irritation and allergic reactions. Poor color fastness can result in the release of these dyes and pigments, making them potentially harmful to the wearer
Here you can find more information about colorfastness tester

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