Aniline yellow is a dye used in textile and paper industries, and it is a bright yellow color. The antonyms of aniline yellow are the opposite of bright yellow, such as dull, drab, or muted colors like grey, black, or white. Other antonyms may include cool colors like blue or green, or darker shades like navy or maroon. In addition to color, antonyms for aniline yellow may also describe a lack of brightness or vibrancy, such as pale, washed out, or faded shades. Ultimately, the antonyms for aniline yellow are any colors or shades that are not bright, bold, or vibrant.