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#a3fc21

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

RGB
163, 252, 33
HSL
84°, 97%, 56%
CMYK
35, 0, 87, 1
Luminance
0.7752

Every format

HEX#a3fc21
RGBrgb(163, 252, 33)
HSLhsl(84, 97%, 56%)
CMYKcmyk(35%, 0%, 87%, 1%)
LABlab(90.6 -55.2 83.4)
LCHlch(90.6 100.0 123.5)
OKLCHoklch(0.900 0.239 131.1)

Copy-ready code

/* CSS */
color: #a3fc21;
background-color: #a3fc21;
/* Tailwind (arbitrary) */
class="text-[#a3fc21] bg-[#a3fc21]"
/* SCSS */
$brand: #a3fc21;
/* SwiftUI */
Color(red: 0.639, green: 0.988, blue: 0.129)
/* Android */
Color.parseColor("#a3fc21")

Accessibility — WCAG contrast

Aa
#a3fc21 on white: 1.27:1
AA ✗ fail · AA-large · AAA
Aa
#a3fc21 on black: 16.50:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red63.9%
Green98.8%
Blue12.9%

CMYK percentages

Cyan35.3%
Magenta0.0%
Yellow86.9%
Key (black)1.2%

Color previews

#a3fc21 text on a black background

contrast 16.50:1

Card sample

#a3fc21 text on a white background

contrast 1.27:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #a3fc21;
Background color
Panel with #a3fc21 background
background-color: #a3fc21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #a3fc21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(163, 252, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(163, 252, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a3fc21;
background: linear-gradient(135deg, #a3fc21, #21FC31);

Monochromatic scale

Palettes built from #a3fc21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #a3fc21 in the Color Lab