#664400 - Notorious Neanderthal color

A rich, deep brown with warm, reddish undertones, this color reads like dark chocolate or freshly tanned leather. It feels earthy and grounded, evoking autumn leaves, walnut wood, and worn saddles. In interiors or branding it conveys warmth, stability, and rustic sophistication, pairing nicely with cream, muted olive, mustard, teal, or aged copper accents. It suggests comfort and heritage rather than flashiness, lending a timeless, tactile quality to palettes that favor natural, vintage, or artisanal aesthetics.

color #664400

#664400 color RGB value is 102, 68, 0, and the CMYK value is 0.00, 0.333, 1.00, 0.600. Alternative names for that color are: notorious neanderthal, brown, saddlebrown, antique bronze, sepia, orange.

Color Conversion

Name
Values
CSS
RGB(0-255)
102, 68, 0
rgb(102, 68, 0)
CMYK
0.00, 0.333, 1.00, 0.600
-
sRGB
0.400, 0.267, 0.00
rgb(40% 26.7% 0%)
Adobe® 98 RGB compatible
0.369, 0.274, 0.0641
color(a98-rgb 0.369 0.274 0.064)
HCT
77.2, 34.1, 31.7
color(--hct 77.2 23.5% 31.7%)
HSL
40.0, 100, 20.0
hsl(40 100% 20%)
HSV
40.0, 100, 40.0
color(--hsv 40 100% 40%)
HWB
40.0, 0.00, 60.0
hwb(40 0% 60%)
Lab
32.0, 11.2, 41.1
lab(32 11.2 41.1)
P3
0.380, 0.272, 0.0740
color(display-p3 0.38 0.272 0.074)
XYZ D50
0.0802, 0.0710, 0.00746
color(xyz-d50 0.08 0.071 0.007)

Shades

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Tints

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Tones

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Color Harmonies

HEX:#664400
RGB:102 68 0
HSL:40deg 100% 20%
HEX:#002266
RGB:0 34 102
HSL:220deg 100% 20%

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