#2a272c - Black Onyx color

A near-black charcoal with a subtle plum undertone, this color reads as deep, smoky graphite softened by just a hint of muted violet. It carries a cool, dusk-like quality—sober, sophisticated, and quietly dramatic—ideal for creating moody backgrounds, elegant accent walls, or refined user interfaces. It pairs beautifully with warm brass, soft cream, and jewel-toned emeralds, lending depth without stark harshness and evoking modern, minimalist, contemplative atmospheres.

#2a272c color RGB value is 42, 39, 44, and the CMYK value is 0.0455, 0.114, 0.00, 0.827. Alternative names for that color are: black onyx, black, shark, indigo.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	42, 39, 44	rgb(42, 39, 44)
CMYK	0.0455, 0.114, 0.00, 0.827	-
sRGB	0.165, 0.153, 0.173	rgb(16.5%, 15.3%, 17.3%)
Adobe® 98 RGB compatible	0.178, 0.170, 0.187	color(a98-rgb, 0.178, 0.17, 0.187)
HCT	308, 5.27, 16.1	color(--hct, 308, 3.63%, 16.1%)
HSL	276, 6.02, 16.3	hsl(276, 6.02%, 16.3%)
HSV	276, 11.4, 17.3	color(--hsv, 276, 11.4%, 17.3%)
HWB	276, 15.3, 82.7	hwb(276, 15.3%, 82.7%)
Lab	16.1, 2.33, -2.78	lab(16.1%, 2.33, -2.78)
P3	0.163, 0.153, 0.171	color(display-p3, 0.163, 0.153, 0.171)
XYZ D50	0.0215, 0.0212, 0.0203	color(xyz-d50, 0.022, 0.021, 0.02)