Black Russian

# 00000F

Stratos

# 01005B

Stratos

is a very saturated very 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

Madras

# 343500

or

Deep Fir

# 003500

and

Temptress

# 350000

To a colorblind person appears

Cod Gray

# 121212