Achromic is an adjective that means lacking color, which makes it a term often associated with albino individuals or monochromatic paintings. The antonyms for achromic are vivid, colorful, and chromatic. These words describe things that are rich in color, life, and contrast, like a sunset over a mountain range or a vibrant bouquet of flowers. Other antonyms for achromic include variegated, multicolored, and polychrome. There is a plethora of colors in the world, and by using these antonyms, you can express the full spectrum of life and all the beauty that it contains.