Cobalt is a silvery gray metal. A link is provided.
The common color for it is Silver, but it can be found in other colors like blue and purple.
The anhydrous cobalt chloride is blue.
Cobalt blue
The compounds of Cobalt as CoCl2 and Cu2O are red.
None.
Probable you think to hexaamminocobalt chloride: the color is orange.
The color of the cobalt streak is blue
Cobalt !
cobalt blue of course
The pigments in cobalt salts of alumina are used to make the color cobalt blue. The pigments are strong, which is why the color is used in many pieces of jewelry, paint and ceramics.
The color given off from the potassium through the blue cobalt glass is somewhat if a lavender, lilac color.
The colour of cobalt chloride paper is BLUE when NO WATER is present.When WATER is present it is PINK.
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Cobalt.
The question is vague in its current wording. Cobalt is a type of blue color. Colors have codings in the web that go by hexadecimal, in which the hex triplet figure for cobalt blue is #0047AB.
Cobalt Blue
Clear...
Azure.