Ground color can refer to the dominant color or background tone of a surface or object. However, there are many synonyms that can be used to describe this quality. For example, the term base color references the primary shade of an object, while undertone describes the subtle hue that contributes to the overall feeling of color. Background color, on the other hand, is used to refer to the color that surrounds or forms the base for an image or design. Additionally, some synonyms for ground color include foundation color, primary tone, and primary color. Regardless of the term used, ground color is an essential element of color theory and design.