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Rang

Colours made from cobalt(ii) oxide

3 colours that our sources say are made from cobalt(ii) oxide.

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

Cobalt green: Stephhzz, CC BY-SA 3.0, source
Cobalt blue: FK1954, Public domain, source

The weekly palette

Every Monday: seven colours you may not know, what the world is wearing this week, and one idea about colour.