#557088 - Captains Blue color

Deep, muted slate blue with subtle gray-green undertones, evoking a calm, storm-tossed sea and weathered denim. It reads cool and composed, neither bright nor overly somber, offering a sophisticated, moody presence that grounds interiors and graphics. Works beautifully as a background or accent, pairing especially well with warm creams, soft blush, aged brass, rich walnut, and coral tones. Feels collected, steady, and slightly vintage—ideal for creating serene, contemplative spaces or refined, understated designs.

#557088 color RGB value is 85, 112, 136, and the CMYK value is 0.375, 0.176, 0.00, 0.467. Alternative names for that color are: captains blue, gray, slategray, blue bayoux, manatee, violet, slategrey.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	85, 112, 136	rgb(85, 112, 136)
CMYK	0.375, 0.176, 0.00, 0.467	-
sRGB	0.333, 0.439, 0.533	rgb(33.3%, 43.9%, 53.3%)
Adobe® 98 RGB compatible	0.368, 0.437, 0.525	color(a98-rgb, 0.368, 0.437, 0.525)
HCT	245, 23.4, 46.0	color(--hct, 245, 16.2%, 46%)
HSL	208, 23.1, 43.3	hsl(208, 23.1%, 43.3%)
HSV	208, 37.5, 53.3	color(--hsv, 208, 37.5%, 53.3%)
HWB	208, 33.3, 46.7	hwb(208, 33.3%, 46.7%)
Lab	45.8, -5.37, -16.6	lab(45.8%, -5.37, -16.6)
P3	0.355, 0.436, 0.525	color(display-p3, 0.355, 0.436, 0.525)
XYZ D50	0.137, 0.151, 0.193	color(xyz-d50, 0.137, 0.151, 0.193)