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#40fb21

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

RGB
64, 251, 33
HSL
112°, 97%, 56%
CMYK
75, 0, 87, 2
Luminance
0.7019

Every format

HEX#40fb21
RGBrgb(64, 251, 33)
HSLhsl(112, 97%, 56%)
CMYKcmyk(75%, 0%, 87%, 2%)
LABlab(87.1 -79.7 79.2)
LCHlch(87.1 112.3 135.2)
OKLCHoklch(0.863 0.278 141.5)

Copy-ready code

/* CSS */
color: #40fb21;
background-color: #40fb21;
/* Tailwind (arbitrary) */
class="text-[#40fb21] bg-[#40fb21]"
/* SCSS */
$brand: #40fb21;
/* SwiftUI */
Color(red: 0.251, green: 0.984, blue: 0.129)
/* Android */
Color.parseColor("#40fb21")

Accessibility — WCAG contrast

Aa
#40fb21 on white: 1.40:1
AA ✗ fail · AA-large · AAA
Aa
#40fb21 on black: 15.04:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red25.1%
Green98.4%
Blue12.9%

CMYK percentages

Cyan74.5%
Magenta0.0%
Yellow86.9%
Key (black)1.6%

Color previews

#40fb21 text on a black background

contrast 15.04:1

Card sample

#40fb21 text on a white background

contrast 1.40:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #40fb21;
Background color
Panel with #40fb21 background
background-color: #40fb21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #40fb21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(64, 251, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 251, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40fb21;
background: linear-gradient(135deg, #40fb21, #21FB93);

Monochromatic scale

Palettes built from #40fb21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #40fb21 in the Color Lab