Black Rock

# 0C043A

Ultramarine

# 1D0A87

Arapawa

is a very saturated dark 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

Green Leaf

# 536007

or triadic complementary

San Felix

# 076015

and triadic complementary

Mahogany

# 601507

To a colorblind person appears

Mine Shaft

# 2a2a2a