Ultramarine

# 07169E

Blue

# 0B22EA

Dark 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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Goes well with complementary color

Buddha Gold

# C4B109

or triadic complementary

Green

# 1CC409

and triadic complementary

Monza

# C4091C

To a colorblind person appears

Tundora

# 4e4e4e