#4d504b - Iron River color

Deep, muted olive-gray with subtle brown undertones, this color reads as an earthy, weathered green leaning toward slate. Low in saturation and medium-dark in value, it feels grounded and understated—sophisticated rather than loud. It evokes moss, worn leather, and vintage military fabrics, making it well suited for quiet backgrounds, industrial-chic interiors, packaging, and branding that aims for calm, rustic refinement. Pairs harmoniously with warm creams, rusts, ochres, and matte brass accents.

#4d504b color RGB value is 77, 80, 75, and the CMYK value is 0.0375, 0.00, 0.0625, 0.686. Alternative names for that color are: iron river, gray, dimgray, fuscous gray, outer space, green.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	77, 80, 75	rgb(77, 80, 75)
CMYK	0.0375, 0.00, 0.0625, 0.686	-
sRGB	0.302, 0.314, 0.294	rgb(30.2%, 31.4%, 29.4%)
Adobe® 98 RGB compatible	0.310, 0.318, 0.300	color(a98-rgb, 0.31, 0.318, 0.3)
HCT	148, 4.65, 33.6	color(--hct, 148, 3.21%, 33.6%)
HSL	96.0, 3.23, 30.4	hsl(96, 3.23%, 30.4%)
HSV	96.0, 6.25, 31.4	color(--hsv, 96, 6.25%, 31.4%)
HWB	96.0, 29.4, 68.6	hwb(96, 29.4%, 68.6%)
Lab	33.6, -2.06, 2.51	lab(33.6%, -2.06, 2.51)
P3	0.304, 0.313, 0.296	color(display-p3, 0.304, 0.313, 0.296)
XYZ D50	0.0733, 0.0783, 0.0591	color(xyz-d50, 0.073, 0.078, 0.059)