#5b5b59 - Forged Steel color

This is a deep, muted stone gray with an earthy, slightly olive-brown undertone. It reads as a cool neutral charcoal in low light, but reveals a subtle warmth and natural patina in brighter conditions, evoking aged metal, weathered concrete, or moss-touched stone. It works well as a grounding background color in interiors, minimalist branding, or industrial palettes, pairing harmoniously with soft creams, warm tans, olive greens, and brass accents for restrained, sophisticated contrast.

#5b5b59 color RGB value is 91, 91, 89, and the CMYK value is 0.00, 0.00, 0.0220, 0.643. Alternative names for that color are: forged steel, gray, dimgray, chicago, outer space, green.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	91, 91, 89	rgb(91, 91, 89)
CMYK	0.00, 0.00, 0.0220, 0.643	-
sRGB	0.357, 0.357, 0.349	rgb(35.7%, 35.7%, 34.9%)
Adobe® 98 RGB compatible	0.358, 0.358, 0.351	color(a98-rgb, 0.358, 0.358, 0.351)
HCT	150, 1.84, 38.6	color(--hct, 150, 1.27%, 38.6%)
HSL	60.0, 1.11, 35.3	hsl(60, 1.11%, 35.3%)
HSV	60.0, 2.20, 35.7	color(--hsv, 60, 2.2%, 35.7%)
HWB	60.0, 34.9, 64.3	hwb(60, 34.9%, 64.3%)
Lab	38.6, -0.312, 1.16	lab(38.6%, -0.312, 1.16)
P3	0.357, 0.357, 0.350	color(display-p3, 0.357, 0.357, 0.35)
XYZ D50	0.100, 0.104, 0.0830	color(xyz-d50, 0.1, 0.104, 0.083)