#423921 - Lisbon Brown color

This shade is a deep, muted olive-brown with warm, earthy undertones. It reads like dark espresso blended with a subtle green tinge, evoking mossy forest floor, weathered leather, and damp bark. The color feels grounded and mature—rustic yet refined—working well as a background or accent in vintage, industrial, or natural palettes. It pairs beautifully with cream, ochre, muted gold, and burnt orange, creating cozy, sophisticated combinations suitable for interiors, branding, and fall-inspired designs.

#423921 color RGB value is 66, 57, 33, and the CMYK value is 0.00, 0.136, 0.500, 0.741. Alternative names for that color are: lisbon brown, black, darkslategray, green, darkslategrey.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	66, 57, 33	rgb(66, 57, 33)
CMYK	0.00, 0.136, 0.500, 0.741	-
sRGB	0.259, 0.224, 0.129	rgb(25.9%, 22.4%, 12.9%)
Adobe® 98 RGB compatible	0.258, 0.234, 0.154	color(a98-rgb, 0.258, 0.234, 0.154)
HCT	91.4, 14.4, 24.3	color(--hct, 91.4, 9.95%, 24.3%)
HSL	43.6, 33.3, 19.4	hsl(43.6, 33.3%, 19.4%)
HSV	43.6, 50.0, 25.9	color(--hsv, 43.6, 50%, 25.9%)
HWB	43.6, 12.9, 74.1	hwb(43.6, 12.9%, 74.1%)
Lab	24.4, 1.17, 16.5	lab(24.4%, 1.17, 16.5)
P3	0.253, 0.225, 0.142	color(display-p3, 0.253, 0.225, 0.142)
XYZ D50	0.0417, 0.0424, 0.0156	color(xyz-d50, 0.042, 0.042, 0.016)