An "accent" refers to the way someone speaks a language, which may sound different because of the specific sounds, rhythms, and pronunciations they use, usually based on their native country or region. Full definition
Yellow and gray is a long time favorite color palette, but we especially love this with the contrast of the black chalkboard wall accented with gold frames. (ruemag.com)
A bold pattern with accent colors throughout can break things up and add some life to the otherwise dull walls. (thefashionablehousewife.com)
I am thinking of a different color accent wall in my living room. (chrislovesjulia.com)