Arapawa

# 0C0C72

Persian Blue

# 1515BF

Ultramarine

is a very saturated 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

Sahara

# 999910

or

La Palma

# 109910

and

Tamarillo

# 991010

To a colorblind person appears

Mine Shaft

# 3f3f3f