Blue 1 & Yellow 5

Blue 1 and Yellow 5 are synthetic color additives, meaning they are man-made rather than found in nature. They are typically produced from petroleum.

These dyes are added to foods and beverages to give them vibrant blue and yellow colors, respectively. They are commonly found in candies, snacks, and drinks to enhance visual appeal.

Both Blue 1 and Yellow 5 are approved by the FDA as color additives for use in food. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, including Blue 1 and Yellow 5. JECFA has evaluated both dyes and set acceptable daily intakes. Some research has explored a possible link between synthetic food dyes and hyperactivity in children, but the scientific evidence on this topic is mixed. Yellow 5 is also known to cause allergic-type reactions, such as hives or asthma, in a small number of sensitive individuals.