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#51bcff

a light, electric blue · cool · closest name: skyblue

RGB
81, 188, 255
HSL
203°, 100%, 66%
CMYK
68, 26, 0, 0
Luminance
0.4494

Every format

HEX#51bcff
RGBrgb(81, 188, 255)
HSLhsl(203, 100%, 66%)
CMYKcmyk(68%, 26%, 0%, 0%)
LABlab(72.8 -10.1 -42.0)
LCHlch(72.8 43.2 256.5)
OKLCHoklch(0.761 0.137 239.7)

Copy-ready code

/* CSS */
color: #51bcff;
background-color: #51bcff;
/* Tailwind (arbitrary) */
class="text-[#51bcff] bg-[#51bcff]"
/* SCSS */
$brand: #51bcff;
/* SwiftUI */
Color(red: 0.318, green: 0.737, blue: 1.000)
/* Android */
Color.parseColor("#51bcff")

Accessibility — WCAG contrast

Aa
#51bcff on white: 2.10:1
AA ✗ fail · AA-large · AAA
Aa
#51bcff on black: 9.99:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red31.8%
Green73.7%
Blue100.0%

CMYK percentages

Cyan68.2%
Magenta26.3%
Yellow0.0%
Key (black)0.0%

Color previews

#51bcff text on a black background

contrast 9.99:1

Card sample

#51bcff text on a white background

contrast 2.10:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #51bcff;
Background color
Panel with #51bcff background
background-color: #51bcff;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #51bcff;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(81, 188, 255, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 188, 255, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51bcff;
background: linear-gradient(135deg, #51bcff, #5A51FF);

Monochromatic scale

Palettes built from #51bcff

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #51bcff in the Color Lab