Colours made from nitrogen
6 colours that our sources say are made from nitrogen.
Blue
Methylene blue
A synthetic blue dye and medicine first made in 1876Dye
#003153
Prussian blue
A deep blue pigment first made in Berlin in the early 1700sPigment · 🇯🇵 Japan
Blue
Indigo carmine
A water-soluble blue dye made from indigo, used in food, medicine and sciencePigment · 🇺🇸 United States
Red
Ponceau 4R
A synthetic strawberry red dye used in foods outside the United StatesDye
Yellow
Quinoline Yellow WS
A greenish yellow synthetic dye used in foods, drinks, medicines and cosmeticsDye · 🇦🇺 Australia +1
Blue
Formazan
A group of synthetic dyes with colours from dark blue to deep red or orangePigment
Photo credits on this page
The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
- Methylene blue: Amanda Slater, Flickr user amandabhslater, CC BY-SA 2.0, source
- Prussian blue: Picture created by publunch, Public domain, source
- Indigo carmine: -- メルビル ( talk ) 08:10, 28 January 2011 (UTC), CC BY-SA 3.0, source
- Ponceau 4R: Nizil Shah, CC BY-SA 4.0, source
- Formazan: Прокопюк Владимир Юрьевич, CC BY-SA 4.0, source