#40464d - Alpine Duck Grey color

A deep, muted slate that reads as a cool charcoal with subtle blue-green undertones. It feels restrained and sophisticated, evoking steel, slate, and storm cloud shadows. As a background it gives interfaces a grounded, modern neutrality; paired with warm accents like brass or wood it softens and gains richness, while with crisp whites or pale pastels it becomes elegantly minimalist. Its low saturation and moderate darkness lend calm authority, making it suitable for professional, industrial, or contemplative design palettes.

color #40464d

#40464d color RGB value is 64, 70, 77, and the CMYK value is 0.169, 0.0909, 0.00, 0.698. Alternative names for that color are: alpine duck grey, gray, darkslategray, mako, outer space, indigo, darkslategrey.

Color Conversion

Name
Values
CSS
RGB(0-255)
64, 70, 77
rgb(64, 70, 77)
CMYK
0.169, 0.0909, 0.00, 0.698
-
sRGB
0.251, 0.275, 0.302
rgb(25.1% 27.5% 30.2%)
Adobe® 98 RGB compatible
0.265, 0.281, 0.305
color(a98-rgb 0.265 0.281 0.305)
HCT
248, 8.60, 29.4
color(--hct 248 5.93% 29.4%)
HSL
212, 9.22, 27.6
hsl(212 9.22% 27.6%)
HSV
212, 16.9, 30.2
color(--hsv 212 16.9% 30.2%)
HWB
212, 25.1, 69.8
hwb(212 25.1% 69.8%)
Lab
29.4, -1.27, -5.10
lab(29.4 -1.27 -5.1)
P3
0.255, 0.274, 0.299
color(display-p3 0.255 0.274 0.299)
XYZ D50
0.0566, 0.0598, 0.0597
color(xyz-d50 0.057 0.06 0.06)

Shades

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Tints

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Tones

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Color Harmonies

HEX:#40464d
RGB:64 70 77
HSL:212.31deg 9.22% 27.65%
HEX:#4d4740
RGB:77 71 64
HSL:32.31deg 9.22% 27.65%

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