Bright Gray

# 3C414C

Slate Gray

# 788399

Shuttle Gray

is a very unsaturated dark cold azure

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

Crocodile

# 726A5A

or

Willow Grove

# 62725A

and

Zambezi

# 725A62

To a colorblind person appears

Dove Gray

# 666666