#588bb4 - Alpha Blue color

A mid-tone cool blue with a subtle slate-gray undertone, evoking calm professionalism and gentle depth. It reads as serene yet confident—less saturated than primary azure but more vivid than steel gray—reminiscent of denim, a clear lake, or an evening sky touched by cloud. Versatile and modern, it pairs beautifully with warm neutrals, soft corals, mustard accents, or crisp whites for contrast. Ideal for branding, UI elements, and interiors where tranquil sophistication is desired.

#588bb4 color RGB value is 88, 139, 180, and the CMYK value is 0.511, 0.228, 0.00, 0.294. Alternative names for that color are: alpha blue, gray, steelblue, steel blue, blue green, violet.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	88, 139, 180	rgb(88, 139, 180)
CMYK	0.511, 0.228, 0.00, 0.294	-
sRGB	0.345, 0.545, 0.706	rgb(34.5%, 54.5%, 70.6%)
Adobe® 98 RGB compatible	0.413, 0.540, 0.694	color(a98-rgb, 0.413, 0.54, 0.694)
HCT	245, 35.4, 55.9	color(--hct, 245, 24.4%, 55.9%)
HSL	207, 38.0, 52.5	hsl(207, 38%, 52.5%)
HSV	207, 51.1, 70.6	color(--hsv, 207, 51.1%, 70.6%)
HWB	207, 34.5, 29.4	hwb(207, 34.5%, 29.4%)
Lab	55.5, -8.79, -27.3	lab(55.5%, -8.79, -27.3)
P3	0.390, 0.540, 0.691	color(display-p3, 0.39, 0.54, 0.691)
XYZ D50	0.207, 0.234, 0.352	color(xyz-d50, 0.207, 0.234, 0.352)