This study aims to compare color symbolism in F. Scott Fitzgerald's The Great Gatsby (1925) with William Golding's Lord of the Flies (1954). It tries to unveil the hidden meanings of the colors in the novels, comparing their different or similar uses of colors. The research uses the analytical method to decode color symbolism and to find the similarities and differences in the use of color symbolism in both works. The findings show that colors' indications and meanings are determined by elements related to context, characters, or setting. The important thing is that colors, like white, red, and yellow, stand for similar ideas in the two novels, while other colors like black, gold, pink, brown, blue, gray, and green, stand for different ideas. The use of color symbolism has a type of similarity, but each writer used it in different ways that determined the colors psychological and social significance in the novel. Keywords: Decoding, Color Symbolism, Lord of the Flies, The Great Gatsby, Moral Decay, Environment, Barbarism, Savagery.