Cerulean

# 00ADD8

Cyan / Aqua

# 00CBFF

Cyan / Aqua

is a very saturated very light cold cyan

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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Goes well with complementary color

Scarlet

# FF3200

or triadic complementary

Electric Lime

# CCFF00

and triadic complementary

Purple Pizzazz

# FF00CB

To a colorblind person appears

Dusty Gray

# 999999