The word "tawnies" refers to a light brown or tan color. Some antonyms that describe colors that are completely opposite to "tawnies" include black, white, red, and blue. Black, which is the absence of all color, is the opposite of white, which is the presence of all color. Red, which is a warm color that represents passion and energy, is the opposite of blue, which is a cold color that represents calmness and tranquility. Other antonyms for "tawnies" include dark, deep, and rich colors such as burgundy, navy, and forest green, which are often used to convey a sense of sophistication and elegance.