Mine Shaft

# 3F3F3F

Gray

# 8C8C8C

Dorado

is a very unsaturated dark warm red

Red is a very strong color. It is a noticeable color that is often used on caution and warning signs. It is often associated with stop or beware. It’s a hot color that evokes a powerful emotion of passion, lust, sex, energy, blood and war.
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Goes well with complementary color

Cutty Sark

# 4F6666

or triadic complementary

Trout

# 4F4F66

and triadic complementary

Finlandia

# 4F664F

To a colorblind person appears

Scorpion

# 575757