#637983 - Blue Monday color

Imagine a muted slate blue-green that balances coolness with a soft, earthy depth. It reads as a stormy sea toned down by gray, carrying a subtle green undertone that keeps it from feeling purely blue. The result is sophisticated and calming, evoking coastal pines under overcast skies or weathered metal. It’s versatile for interiors and design, harmonizing with warm neutrals, aged brass, or pale woods, and works equally well as an anchoring background or an understated accent.

#637983 color RGB value is 99, 121, 131, and the CMYK value is 0.244, 0.0763, 0.00, 0.486. Alternative names for that color are: blue monday, gray, slategray, pale sky, manatee, violet, slategrey.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	99, 121, 131	rgb(99, 121, 131)
CMYK	0.244, 0.0763, 0.00, 0.486	-
sRGB	0.388, 0.475, 0.514	rgb(38.8%, 47.5%, 51.4%)
Adobe® 98 RGB compatible	0.414, 0.471, 0.508	color(a98-rgb, 0.414, 0.471, 0.508)
HCT	226, 16.2, 49.5	color(--hct, 226, 11.2%, 49.5%)
HSL	199, 13.9, 45.1	hsl(199, 13.9%, 45.1%)
HSV	199, 24.4, 51.4	color(--hsv, 199, 24.4%, 51.4%)
HWB	199, 38.8, 48.6	hwb(199, 38.8%, 48.6%)
Lab	49.3, -6.52, -8.30	lab(49.3%, -6.52, -8.3)
P3	0.405, 0.472, 0.509	color(display-p3, 0.405, 0.472, 0.509)
XYZ D50	0.161, 0.179, 0.182	color(xyz-d50, 0.161, 0.179, 0.182)