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#40cd21

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

RGB
64, 205, 33
HSL
109°, 72%, 47%
CMYK
69, 0, 84, 20
Luminance
0.4486

Every format

HEX#40cd21
RGBrgb(64, 205, 33)
HSLhsl(109, 72%, 47%)
CMYKcmyk(69%, 0%, 84%, 20%)
LABlab(72.8 -65.8 66.6)
LCHlch(72.8 93.6 134.7)
OKLCHoklch(0.744 0.232 140.9)

Copy-ready code

/* CSS */
color: #40cd21;
background-color: #40cd21;
/* Tailwind (arbitrary) */
class="text-[#40cd21] bg-[#40cd21]"
/* SCSS */
$brand: #40cd21;
/* SwiftUI */
Color(red: 0.251, green: 0.804, blue: 0.129)
/* Android */
Color.parseColor("#40cd21")

Accessibility — WCAG contrast

Aa
#40cd21 on white: 2.11:1
AA ✗ fail · AA-large · AAA
Aa
#40cd21 on black: 9.97:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red25.1%
Green80.4%
Blue12.9%

CMYK percentages

Cyan68.8%
Magenta0.0%
Yellow83.9%
Key (black)19.6%

Color previews

#40cd21 text on a black background

contrast 9.97:1

Card sample

#40cd21 text on a white background

contrast 2.11:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #40cd21;
Background color
Panel with #40cd21 background
background-color: #40cd21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #40cd21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(64, 205, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 205, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40cd21;
background: linear-gradient(135deg, #40cd21, #21CD75);

Monochromatic scale

Palettes built from #40cd21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #40cd21 in the Color Lab