Is Brilliant Blue FCF (E133 / INS 133) Halal?
Brilliant Blue FCF is generally considered halal. It is made by chemical synthesis, not from an animal or plant source, so there is no animal-derived ingredient in the dye itself.
Where it comes from
Brilliant Blue FCF is a synthetic blue dye. It is sold as E133 in Europe and as FD&C Blue No. 1 in the United States, and it colours drinks, sweets, ice pops, cake decorations and some medicines and supplements.
Why this status?
It is made by chemical synthesis, not from an animal or plant source, so there is no animal-derived ingredient in the dye itself. That is why it is generally treated as halal on ingredients.
What deserves a look is the form it is sold in. Liquid and gel colour preparations can include a carrier such as glycerin, propylene glycol or alcohol, and the finished product's label does not always say which. If that matters to you, a halal-certified product or a question to the manufacturer settles it. Glazing agents and gelatin in the sweet or capsule are separate questions, since a blue sweet can still contain gelatin or carmine. This is general information, not a religious ruling or medical advice.
Editorial summary
This summary is editorial and is general information, not a religious ruling. The status above is unchanged.
What it is
Brilliant Blue FCF is a synthetic blue dye. In Europe it is listed as E133 and in the United States it is called FD&C Blue No. 1, and it also goes by Blue 1 and Acid Blue 9. It is made by chemical synthesis, not from an animal or plant, so it contains no animal-derived ingredient.
Where it appears
It colours drinks, sweets, ice pops and cake decorations, and it is also used in some medicines and supplements. It is often mixed with other dyes to make green, purple and other shades, so a product that lists several colours may contain it without a blue appearance.
Is it halal
On ingredients, the dye itself is generally treated as halal because it is synthetic. The questions are about the form it is sold in and what it is used in. Liquid and gel colour preparations can include a carrier such as glycerin, propylene glycol or alcohol, and the finished food's label does not always state which. The blue sweet or capsule can also carry other ingredients that matter, such as gelatin, carmine or shellac glaze. This is general information and not a religious ruling; ask a qualified scholar if you want a ruling.
Reading a label
Look for Brilliant Blue FCF, FD&C Blue No. 1, Blue 1 or E133. A Lake form, such as Blue 1 Lake, is the dye bound to a base so it can colour dry products, and it is the same dye. If the carrier matters, a halal certificate on the product or a question to the manufacturer settles it.
In short
In short, Brilliant Blue FCF is a synthetic dye with no animal source, so it is generally treated as halal on ingredients. Check the other ingredients in the product, especially gelatin and glazes, and confirm the carrier if it matters to you.
Also listed on labels as
Brilliant Blue FCF can appear on an ingredient list as FD&C Blue No. 1, Blue 1, Blue 1 Lake, Acid Blue 9, INS 133, E133, food blue 2.
Checking the product
This ingredient is generally halal, but the finished product can include other ingredients that raise questions, so read the whole list and look for a halal certificate where you need assurance.
Sources
Classification based on clinical nutrition assessment; no independent published study cited.
Reviewed by Habib Aman, Islamic Scholar, MBA — last reviewed October 19, 2026.
This is general guidance for everyday shopping, not a religious ruling. Formulations vary by manufacturer and country — confirm with the manufacturer or your local scholar when it matters.
Checking a whole product?
SafaScan is a halal scanner app that is coming soon. It will check Brilliant Blue FCF and every other ingredient on a product. Sign up for launch updates. Learn about SafaScan.
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