Black Russian

# 06002B

Navy Blue

# 110077

Stratos

is a very saturated dark cold blue

Blue is a cool calming color that shows creativity and intelligence. It is a popular color among large corporations, hospitals and airlines. It is a color of loyalty, strength, wisdom and trust. Blue has a calming effect on the psyche. Blue is the color of the sky and the sea and is often used to represent those images.
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That goes well with

Verdun Green

# 455100

or

Crusoe

# 00510C

and

Indian Tan

# 510C00

To a colorblind person appears

Mine Shaft

# 1f1f1f