#646c64 - Cannon Grey color

This is a muted green-gray with cool, smoky undertones evoking weathered moss or aged olive. It reads as calm and grounded—subtle, sophisticated and slightly vintage. In warm light it leans olive; under cool light it becomes more slate-like. It works well for cozy interiors, exteriors, and industrial accents, pairing beautifully with warm wood, brass, cream, or deep navy. Use it to create serene, nature-inspired palettes or understated, modern backdrops that feel collected rather than loud.

#646c64 color RGB value is 100, 108, 100, and the CMYK value is 0.0741, 0.00, 0.0741, 0.576. Alternative names for that color are: cannon grey, gray, dimgray, corduroy, outer space, green.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	100, 108, 100	rgb(100, 108, 100)
CMYK	0.0741, 0.00, 0.0741, 0.576	-
sRGB	0.392, 0.424, 0.392	rgb(39.2%, 42.4%, 39.2%)
Adobe® 98 RGB compatible	0.401, 0.422, 0.393	color(a98-rgb, 0.401, 0.422, 0.393)
HCT	156, 7.97, 44.7	color(--hct, 156, 5.5%, 44.7%)
HSL	120, 3.85, 40.8	hsl(120, 3.85%, 40.8%)
HSV	120, 7.41, 42.4	color(--hsv, 120, 7.41%, 42.4%)
HWB	120, 39.2, 57.6	hwb(120, 39.2%, 57.6%)
Lab	44.7, -4.42, 3.39	lab(44.7%, -4.42, 3.39)
P3	0.398, 0.423, 0.395	color(display-p3, 0.398, 0.423, 0.395)
XYZ D50	0.132, 0.144, 0.107	color(xyz-d50, 0.132, 0.144, 0.107)