Blue 2 Yellow 6

Blue 2 and Yellow 6 are synthetic food colorings. Blue 2, also known as Indigo Carmine, is a blue dye. Yellow 6, also known as Sunset Yellow FCF, is an orange-yellow dye. Both are manufactured for use in food.

These synthetic dyes are added to foods to provide or enhance color, making products more visually appealing. They are commonly found in baked goods like cakes and cupcakes, as well as in candies and snacks.

Blue 2 and Yellow 6 are approved food additives in the United States. The FDA has evaluated their safety for consumption. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, which includes Blue 2 and Yellow 6. Some studies have explored potential links between artificial food dyes and hyperactivity in children, though research findings are mixed and regulatory bodies continue to permit their use within established guidelines. JECFA and EFSA have also evaluated these color additives.