Antonyms for "ice blue" can vary depending on the context. However, in general, some antonyms for the color "ice blue" can be vibrant shades such as bright red, orange, or yellow. The opposite of a cool, icy tone could be a warm, fiery one. Additionally, deep, rich shades of purple, navy, or emerald green could also be considered antonyms for "ice blue." These colors evoke a sense of depth, richness, and warmth that contrast with the cool, light, and airy tone of "ice blue." Ultimately, antonyms for "ice blue" will depend on the specific context and the desired effect for the design, visuals, or mood.