Blue1

Blue 1, also known as Brilliant Blue FCF or FD&C Blue No. 1, is a synthetic food coloring. It is a petroleum-based dye manufactured through chemical synthesis.

Manufacturers add Blue 1 to provide a vibrant blue color to a wide range of food products. It is commonly found in candies, beverages, baked goods, dairy products like yogurt, and desserts.

Blue 1 is an FDA-approved color additive for use in food. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, including Blue 1. JECFA has evaluated Blue 1 and set an acceptable daily intake. EFSA has also evaluated it and set an acceptable daily intake. Some studies have explored potential links between synthetic food dyes and hyperactivity in children, but the scientific evidence is mixed; the FDA acknowledges that while a causal link has not been established for the general population, some children may be sensitive.