#353739 - Cobalt Night color

Deep charcoal gray with cool, nearly neutral undertones. It reads almost black but keeps a soft, muted presence, showing faint blue-green cooling that prevents heaviness. The color feels industrial and sophisticated—subtle, modern, and restrained—ideal for backgrounds, typography, or minimalist interiors where depth without stark contrast is desired. Pair it with warm metallics or crisp whites to add contrast, or with soft pastels and wood tones to soften its austerity while maintaining an elegant, contemporary mood.

color #353739

#353739 color RGB value is 53, 55, 57, and the CMYK value is 0.0702, 0.0351, 0.00, 0.776. Alternative names for that color are: cobalt night, black, darkslategray, tuatara, outer space, indigo, darkslategrey.

Color Conversion

Name
Values
CSS
RGB(0-255)
53, 55, 57
rgb(53, 55, 57)
CMYK
0.0702, 0.0351, 0.00, 0.776
-
sRGB
0.208, 0.216, 0.224
rgb(20.8% 21.6% 22.4%)
Adobe® 98 RGB compatible
0.222, 0.227, 0.233
color(a98-rgb 0.222 0.227 0.233)
HCT
237, 3.65, 22.9
color(--hct 237 2.52% 22.9%)
HSL
210, 3.64, 21.6
hsl(210 3.64% 21.6%)
HSV
210, 7.02, 22.4
color(--hsv 210 7.02% 22.4%)
HWB
210, 20.8, 77.6
hwb(210 20.8% 77.6%)
Lab
22.9, -0.535, -1.57
lab(22.9 -0.535 -1.57)
P3
0.209, 0.215, 0.223
color(display-p3 0.209 0.215 0.223)
XYZ D50
0.0361, 0.0378, 0.0334
color(xyz-d50 0.036 0.038 0.033)

Shades

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Tints

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Tones

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Color Harmonies

HEX:#353739
RGB:53 55 57
HSL:210deg 3.64% 21.57%
HEX:#393735
RGB:57 55 53
HSL:30deg 3.64% 21.57%

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