Dark Blue

# 180AD8

Blue

# 1C0CFF

Blue

is a very saturated very light 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

Chartreuse Yellow

# EEFF0C

or

Green

# 0CFF1C

and

Scarlet

# FF1C0C

To a colorblind person appears

Dove Gray

# 626262