#343b4e - Old Mill color

A deep, muted slate-blue with strong charcoal undertones, this color reads as cool and sophisticated—nearly navy but softened by gray and a whisper of green. It evokes twilight skies and industrial interiors, lending a restrained, moody elegance to interfaces, branding, or home decor. It pairs beautifully with warm metallics, creamy off-whites, and blush pastels for contrast, and works well as a background or accent to provide depth without overwhelming brighter accents.

color #343b4e

#343b4e color RGB value is 52, 59, 78, and the CMYK value is 0.333, 0.244, 0.00, 0.694. Alternative names for that color are: old mill, black, darkslategray, bright gray, outer space, indigo, darkslategrey.

Color Conversion

Name
Values
CSS
RGB(0-255)
52, 59, 78
rgb(52, 59, 78)
CMYK
0.333, 0.244, 0.00, 0.694
-
sRGB
0.204, 0.231, 0.306
rgb(20.4% 23.1% 30.6%)
Adobe® 98 RGB compatible
0.223, 0.241, 0.308
color(a98-rgb 0.223 0.241 0.308)
HCT
269, 16.7, 25.0
color(--hct 269 11.5% 25%)
HSL
224, 20.0, 25.5
hsl(224 20% 25.5%)
HSV
224, 33.3, 30.6
color(--hsv 224 33.3% 30.6%)
HWB
224, 20.4, 69.4
hwb(224 20.4% 69.4%)
Lab
24.8, 0.923, -12.7
lab(24.8 0.923 -12.7)
P3
0.209, 0.231, 0.300
color(display-p3 0.209 0.231 0.3)
XYZ D50
0.0427, 0.0436, 0.0591
color(xyz-d50 0.043 0.044 0.059)

Shades

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Tints

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Tones

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Color Harmonies

HEX:#343b4e
RGB:52 59 78
HSL:223.85deg 20% 25.49%
HEX:#4e4734
RGB:78 71 52
HSL:43.85deg 20% 25.49%

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