"Cypress Yellow" is a color that can be described as a bright shade of yellow that resembles the color of fresh cypress wood. Its antonyms could be a range of colors that are opposite to yellow on the color wheel, such as blue, violet, or green. For example, navy blue, plum, or olive green could be considered antonyms for cypress yellow. Other antonyms could be colors that are lighter or darker than cypress yellow, such as white, gray, black, or brown. Additionally, pastel shades like lavender, pink, or baby blue could also be considered antonyms for cypress yellow.