Heather gray describes a color that is not a solid, uniform shade of gray, but rather a mixture of light and dark gray fibers. This combination creates a textured, salt-and-pepper effect. Think of the appearance of some woolen fabrics, where different shades of yarn are interwoven to produce a blended visual impression.
The popularity of this particular shade stems from its ability to subtly mask imperfections and offer a softer visual alternative to solid, flat grays. This characteristic makes it a favored choice in clothing, particularly activewear and casual garments, where comfort and a relaxed aesthetic are valued. Historically, its use has extended to interior design, providing a neutral yet interesting backdrop.