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#c0ff21

a balanced, electric green · cool · closest name: yellow

RGB
192, 255, 33
HSL
77°, 100%, 57%
CMYK
25, 0, 87, 0
Luminance
0.8284

Every format

HEX#c0ff21
RGBrgb(192, 255, 33)
HSLhsl(77, 100%, 57%)
CMYKcmyk(25%, 0%, 87%, 0%)
LABlab(92.9 -46.0 86.0)
LCHlch(92.9 97.5 118.2)
OKLCHoklch(0.924 0.229 126.0)

Copy-ready code

/* CSS */
color: #c0ff21;
background-color: #c0ff21;
/* Tailwind (arbitrary) */
class="text-[#c0ff21] bg-[#c0ff21]"
/* SCSS */
$brand: #c0ff21;
/* SwiftUI */
Color(red: 0.753, green: 1.000, blue: 0.129)
/* Android */
Color.parseColor("#c0ff21")

Accessibility — WCAG contrast

Aa
#c0ff21 on white: 1.20:1
AA ✗ fail · AA-large · AAA
Aa
#c0ff21 on black: 17.57:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red75.3%
Green100.0%
Blue12.9%

CMYK percentages

Cyan24.7%
Magenta0.0%
Yellow87.1%
Key (black)0.0%

Color previews

#c0ff21 text on a black background

contrast 17.57:1

Card sample

#c0ff21 text on a white background

contrast 1.20:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #c0ff21;
Background color
Panel with #c0ff21 background
background-color: #c0ff21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #c0ff21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(192, 255, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(192, 255, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #c0ff21;
background: linear-gradient(135deg, #c0ff21, #2CFF21);

Monochromatic scale

Palettes built from #c0ff21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #c0ff21 in the Color Lab