Onion

is a 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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Goes well with complementary color

Haiti

# 0B0D2B

or triadic complementary

Valentino

# 290B2B

and triadic complementary

Firefly

# 0B2B29

To a colorblind person appears

Mine Shaft

# 202020