In design and fashion, 'tone and matching' refers to the selection and combination of colors to create aesthetically pleasing and harmonious visuals. This concept is crucial in interior design, fashion, and graphic design. It involves understanding color theory, which includes the use of primary, secondary, and tertiary colors, and color harmonies like complementary, analogous, and triadic. Matching tones well can enhance the visual appeal and convey a particular mood or theme.