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#a3f921

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

RGB
163, 249, 33
HSL
84°, 95%, 55%
CMYK
35, 0, 87, 2
Luminance
0.7565

Every format

HEX#a3f921
RGBrgb(163, 249, 33)
HSLhsl(84, 95%, 55%)
CMYKcmyk(35%, 0%, 87%, 2%)
LABlab(89.7 -54.0 82.6)
LCHlch(89.7 98.7 123.1)
OKLCHoklch(0.893 0.236 130.8)

Copy-ready code

/* CSS */
color: #a3f921;
background-color: #a3f921;
/* Tailwind (arbitrary) */
class="text-[#a3f921] bg-[#a3f921]"
/* SCSS */
$brand: #a3f921;
/* SwiftUI */
Color(red: 0.639, green: 0.976, blue: 0.129)
/* Android */
Color.parseColor("#a3f921")

Accessibility — WCAG contrast

Aa
#a3f921 on white: 1.30:1
AA ✗ fail · AA-large · AAA
Aa
#a3f921 on black: 16.13:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red63.9%
Green97.6%
Blue12.9%

CMYK percentages

Cyan34.5%
Magenta0.0%
Yellow86.7%
Key (black)2.4%

Color previews

#a3f921 text on a black background

contrast 16.13:1

Card sample

#a3f921 text on a white background

contrast 1.30:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #a3f921;
Background color
Panel with #a3f921 background
background-color: #a3f921;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #a3f921;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(163, 249, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(163, 249, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a3f921;
background: linear-gradient(135deg, #a3f921, #21F92F);

Monochromatic scale

Palettes built from #a3f921

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #a3f921 in the Color Lab