#818b9c - Prophetic Sea color

Soft, muted slate blue-gray leaning cool with subtle hints of steely blue and violet. It feels calm and sophisticated, suggestive of an overcast sky or weathered denim. This restrained mid-tone works well as a neutral background in interfaces, elegant apparel, and contemporary interiors. It pairs beautifully with warm tans, mustard accents, and brushed metals, and can ground brighter hues while maintaining a serene, professional atmosphere. Versatile for both modern and vintage-inspired palettes.

#818b9c color RGB value is 129, 139, 156, and the CMYK value is 0.173, 0.109, 0.00, 0.388. Alternative names for that color are: prophetic sea, gray, lightslategray, manatee, violet.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	129, 139, 156	rgb(129, 139, 156)
CMYK	0.173, 0.109, 0.00, 0.388	-
sRGB	0.506, 0.545, 0.612	rgb(50.6%, 54.5%, 61.2%)
Adobe® 98 RGB compatible	0.513, 0.540, 0.604	color(a98-rgb, 0.513, 0.54, 0.604)
HCT	257, 14.7, 57.6	color(--hct, 257, 10.2%, 57.6%)
HSL	218, 12.0, 55.9	hsl(218, 12%, 55.9%)
HSV	218, 17.3, 61.2	color(--hsv, 218, 17.3%, 61.2%)
HWB	218, 50.6, 38.8	hwb(218, 50.6%, 38.8%)
Lab	57.5, -0.985, -10.4	lab(57.5%, -0.985, -10.4)
P3	0.513, 0.544, 0.606	color(display-p3, 0.513, 0.544, 0.606)
XYZ D50	0.243, 0.254, 0.266	color(xyz-d50, 0.243, 0.254, 0.266)