Black

# 000000

Cola

# 353100

Blue

is a very saturated very dark warm redish yellow

Yellow is the brightest color to the human eye. It represents youth, fun, happiness, sunshine and other light playful feelings. It is a cheerful energetic color.
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That goes well with

Black Russian

# 00010F

or

Black Russian

# 0E000F

and

Swamp

# 000F0E

To a colorblind person appears

Cod Gray

# 0a0a0a