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#588bbc

a balanced, soft blue · cool · closest name: steelblue

RGB
88, 139, 188
HSL
209°, 43%, 54%
CMYK
53, 26, 0, 26
Luminance
0.2417

Every format

HEX#588bbc
RGBrgb(88, 139, 188)
HSLhsl(209, 43%, 54%)
CMYKcmyk(53%, 26%, 0%, 26%)
LABlab(56.3 -2.9 -30.8)
LCHlch(56.3 30.9 264.6)
OKLCHoklch(0.621 0.093 248.6)

Copy-ready code

/* CSS */
color: #588bbc;
background-color: #588bbc;
/* Tailwind (arbitrary) */
class="text-[#588bbc] bg-[#588bbc]"
/* SCSS */
$brand: #588bbc;
/* SwiftUI */
Color(red: 0.345, green: 0.545, blue: 0.737)
/* Android */
Color.parseColor("#588bbc")

Accessibility — WCAG contrast

Aa
#588bbc on white: 3.60:1
AA ✗ fail · AA-large · AAA
Aa
#588bbc on black: 5.83:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red34.5%
Green54.5%
Blue73.7%

CMYK percentages

Cyan53.2%
Magenta26.1%
Yellow0.0%
Key (black)26.3%

Color previews

#588bbc text on a black background

contrast 5.83:1

Card sample

#588bbc text on a white background

contrast 3.60:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #588bbc;
Background color
Panel with #588bbc background
background-color: #588bbc;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #588bbc;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(88, 139, 188, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(88, 139, 188, 0.45);
Border & gradient
Gradient panel
border: 3px solid #588bbc;
background: linear-gradient(135deg, #588bbc, #6858BC);

Monochromatic scale

Palettes built from #588bbc

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #588bbc in the Color Lab