#434a54 - Sea Mariner color

This deep, muted slate leans toward a cool charcoal with blue-gray undertones, evoking dusk-lit concrete and storm clouds. It reads sophisticated and restrained—modern yet timeless—suitable as a neutral backdrop in interiors, fashion, and interface design. The color pairs beautifully with warm wood tones, brass accents, and soft creams to create balanced contrast, or with lighter blues and greens for a tonal scheme. It conveys calm stability, understated elegance, and an industrial, urban mood without feeling harsh.

#434a54 color RGB value is 67, 74, 84, and the CMYK value is 0.202, 0.119, 0.00, 0.671. Alternative names for that color are: sea mariner, gray, darkslategray, mako, outer space, indigo, darkslategrey.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	67, 74, 84	rgb(67, 74, 84)
CMYK	0.202, 0.119, 0.00, 0.671	-
sRGB	0.263, 0.290, 0.329	rgb(26.3%, 29%, 32.9%)
Adobe® 98 RGB compatible	0.277, 0.295, 0.331	color(a98-rgb, 0.277, 0.295, 0.331)
HCT	254, 10.7, 31.2	color(--hct, 254, 7.41%, 31.2%)
HSL	215, 11.3, 29.6	hsl(215, 11.3%, 29.6%)
HSV	215, 20.2, 32.9	color(--hsv, 215, 20.2%, 32.9%)
HWB	215, 26.3, 67.1	hwb(215, 26.3%, 67.1%)
Lab	31.1, -1.08, -6.98	lab(31.1%, -1.08, -6.98)
P3	0.268, 0.289, 0.326	color(display-p3, 0.268, 0.289, 0.326)
XYZ D50	0.0635, 0.0670, 0.0707	color(xyz-d50, 0.064, 0.067, 0.071)