Dark Blue

# 2505C4

Blue

# 3007FF

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

Bitter Lemon

# C4EA07

or

Malachite

# 07EA2C

and

Scarlet

# EA2C07

To a colorblind person appears

Scorpion

# 5f5f5f