#21df8c
a balanced, vivid green · cool · closest name: aquamarine
RGB
33, 223, 140
HSL
154°, 75%, 50%
CMYK
85, 0, 37, 13
Luminance
0.5499
Every format
| HEX | #21df8c |
| RGB | rgb(33, 223, 140) |
| HSL | hsl(154, 75%, 50%) |
| CMYK | cmyk(85%, 0%, 37%, 13%) |
| LAB | lab(79.0 -62.7 28.5) |
| LCH | lch(79.0 68.9 155.6) |
| OKLCH | oklch(0.798 0.184 157.1) |
Copy-ready code
/* CSS */
color: #21df8c;
background-color: #21df8c;
/* Tailwind (arbitrary) */
class="text-[#21df8c] bg-[#21df8c]"
/* SCSS */
$brand: #21df8c;
/* SwiftUI */
Color(red: 0.129, green: 0.875, blue: 0.549)
/* Android */
Color.parseColor("#21df8c")Accessibility — WCAG contrast
Aa
#21df8c on white: 1.75:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21df8c on black: 12.00:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green87.5%
Blue54.9%
CMYK percentages
Cyan85.2%
Magenta0.0%
Yellow37.2%
Key (black)12.5%
Color previews
#21df8c text on a black background
contrast 12.00:1
Card sample
#21df8c text on a white background
contrast 1.75:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21df8c;
Background color
Panel with #21df8c background
background-color: #21df8c;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21df8c;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 223, 140, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 223, 140, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21df8c; background: linear-gradient(135deg, #21df8c, #21B3DF);