Low-saturation color matching refers to the use of colors with low saturation in a design or composition. Saturation, in the context of color, refers to the purity or intensity of a color. Low saturation colors are often more muted, pastel, or desaturated, and are used to create a calming, serene, or understated effect. This technique is commonly used in interior design, graphic design, and art to achieve a harmonious and balanced look.