What is E133?

Brilliant blue FCF is a synthetic organic compound used primarily as a blue colorant for processed foods, medications, dietary supplements, and cosmetics. It is classified as a triarylmethane dye and is known under various names, such as FD&C Blue No. E133 sits in the E100–E199 series, which in the EU classification mainly covers colours.

What is E133 used for?

E133 belongs to the colours group. Colours are added to give or restore colour to food. Some are natural, like curcumin from turmeric; some synthetic dyes are debated and require warning labels in the EU.

Is E133 safe?

E133 is considered safe at the levels used in food and is approved for use in the EU. “Safe” means it is approved in the EU and regarded as safe at the levels used in food.

How E133 appears on labels

On food packaging you'll find E133 either as the number “E133” or by the name “Brilliant Blue FCF” in the ingredient list, often after its function. Ingredients are listed in descending order by weight, so an additive near the end is present only in small amounts.

Is E133 vegan?

Yes, E133 is suitable for vegans.