Brilliant Blue FCF (E133) β€” What You Need to Know

Caution(5/10)Synthetic

The score is an eNumbers.org editorial summary, not an official agency rating or medical advice. Start with the regulatory status and primary sources below.

What Is Brilliant Blue FCF?

Brilliant Blue FCF is a synthetic blue food dye also known in the United States as FD&C Blue No. 1. It is authorised for specified uses in the European Union and approved in the United States, with permitted categories and maximum levels defined by each jurisdiction.

What Is It Used For?

Produces bright blue and turquoise colors in foods and beverages. Often combined with Yellow No. 5 to produce green. Used in candy, ice cream, canned foods, and some beverages.

Function: Blue synthetic food coloring

Regulatory & Editorial Context

πŸ“Š
Acceptable Daily Intake (ADI)
12.5 mg/kg bw/day
πŸ›οΈ
Regulatory Status
πŸ‡ΊπŸ‡Έ USA (FDA): Approved as FD&C Blue No. 1
πŸ‡ͺπŸ‡Ί EU (EFSA): EU-authorised for specified food categories and conditions of use
⚠️ Key Concerns

Authorisation is use-specific: permitted food categories and maximum levels differ by jurisdiction. Hypersensitivity has been reported, but regulatory status should be checked against the current EU and FDA records rather than inferred from historic national lists.

Editorial context score

eNumbers.org currently assigns Brilliant Blue FCF an editorial context label of Caution with a score of 5/10. This is 0.8 points below the database average for colorings (5.8/10). Dataset reference year: 2010.

This score is not issued by EFSA, FDA, WHO or another regulator.

Commonly Found In

CandyIce creamSports drinksCanned peasGelatin desserts
Example brands:
GatoradePowerade

Always check the label for E133 or 'Brilliant Blue FCF'

β–ΆChemical Information
Formula: C37H34N2Na2O9S3
Molecular Weight: 792.84 g/mol
CAS Number: 3844-45-9
INS Number: 133
Also known as: E133, FD&C Blue No. 1, Blue 1, INS 133, CI Food Blue 2

Primary Sources

Source review: 2026-08-08

Official references relevant to this page. Check the agency record for current permitted uses, limits and jurisdiction-specific wording.

How eNumbers.org uses sources β†’

Frequently Asked Questions about Brilliant Blue FCF

Current dataset status: FDA β€” Approved as FD&C Blue No. 1; EFSA/EU β€” EU-authorised for specified food categories and conditions of use. Reported concerns: Authorisation is use-specific: permitted food categories and maximum levels differ by jurisdiction. Hypersensitivity has been reported, but regulatory status should be checked against the current EU and FDA records rather than inferred from historic national lists. Regulatory status and individual risk are not the same; check the primary sources and permitted conditions of use.

Quick Facts

E-Number
E133
INS Number
133
Category
Colorings
Origin
Synthetic
FDA Status
Approved as FD&C Blue No. 1
EFSA Status
EU-authorised for specified food categories and conditions of use
ADI
12.5 mg/kg bw/day
Dataset Review
2010
Ingredient-level Dietary Notes
Vegan: βœ… YesHalal: βœ… YesKosher: βœ… YesGluten-Free: βœ… Yes

Carriers, processing aids and product certification can change suitability. Verify the final label and certifier.

Disclaimer: This information is for educational purposes only and is not medical advice. Always consult a healthcare professional for health-related decisions.

Related Additives

Other colorings in the same family