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#51ffbe

a light, electric green · cool · closest name: aquamarine

RGB
81, 255, 190
HSL
158°, 100%, 66%
CMYK
68, 0, 26, 0
Luminance
0.7699

Every format

HEX#51ffbe
RGBrgb(81, 255, 190)
HSLhsl(158, 100%, 66%)
CMYKcmyk(68%, 0%, 26%, 0%)
LABlab(90.3 -58.9 18.4)
LCHlch(90.3 61.7 162.6)
OKLCHoklch(0.896 0.168 163.8)

Copy-ready code

/* CSS */
color: #51ffbe;
background-color: #51ffbe;
/* Tailwind (arbitrary) */
class="text-[#51ffbe] bg-[#51ffbe]"
/* SCSS */
$brand: #51ffbe;
/* SwiftUI */
Color(red: 0.318, green: 1.000, blue: 0.745)
/* Android */
Color.parseColor("#51ffbe")

Accessibility — WCAG contrast

Aa
#51ffbe on white: 1.28:1
AA ✗ fail · AA-large · AAA
Aa
#51ffbe on black: 16.40:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red31.8%
Green100.0%
Blue74.5%

CMYK percentages

Cyan68.2%
Magenta0.0%
Yellow25.5%
Key (black)0.0%

Color previews

#51ffbe text on a black background

contrast 16.40:1

Card sample

#51ffbe text on a white background

contrast 1.28:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(81, 255, 190, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 255, 190, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51ffbe;
background: linear-gradient(135deg, #51ffbe, #51CCFF);

Monochromatic scale

Palettes built from #51ffbe

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #51ffbe in the Color Lab