Cool Onyx Black
A versatile very dark neutral.
#353939
rgb(53, 57, 57)
Color formats
HEX
#353939
RGB
rgb(53, 57, 57)
HSL
hsl(180, 3.6%, 21.6%)
HSV
hsv(180, 7%, 22.4%)
CMYK
cmyk(7%, 0%, 0%, 77.6%)
Color shades
Lighter tints and darker shades of Cool Onyx Black.
Lightest
#9AA1A1
Lighter
#666E6E
Base
#353939
Darker
#040404
Darkest
#000000
Complementary
The opposite hue on the color wheel.
Analogous
Neighbouring hues that harmonise.
Contrast & readability
Where Cool Onyx Black works
Cool Onyx Black (#353939) is a versatile very dark neutral. As a deep tone it works well for text, headers and high-contrast backgrounds where you want weight and focus. The low saturation keeps it calm and easy to pair, so it sits comfortably next to almost any accent color.
Observe the spectrum
More colors related to Cool Onyx Black — or browse all blacks.
Color tools
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Complementary Color Finder
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