#28df8f
a balanced, vivid green · cool · closest name: aquamarine
RGB
40, 223, 143
HSL
154°, 74%, 52%
CMYK
82, 0, 36, 13
Luminance
0.5521
Every format
| HEX | #28df8f |
| RGB | rgb(40, 223, 143) |
| HSL | hsl(154, 74%, 52%) |
| CMYK | cmyk(82%, 0%, 36%, 13%) |
| LAB | lab(79.2 -61.5 27.1) |
| LCH | lch(79.2 67.3 156.2) |
| OKLCH | oklch(0.799 0.180 157.7) |
Copy-ready code
/* CSS */
color: #28df8f;
background-color: #28df8f;
/* Tailwind (arbitrary) */
class="text-[#28df8f] bg-[#28df8f]"
/* SCSS */
$brand: #28df8f;
/* SwiftUI */
Color(red: 0.157, green: 0.875, blue: 0.561)
/* Android */
Color.parseColor("#28df8f")Accessibility — WCAG contrast
Aa
#28df8f on white: 1.74:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#28df8f on black: 12.04:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green87.5%
Blue56.1%
CMYK percentages
Cyan82.1%
Magenta0.0%
Yellow35.9%
Key (black)12.5%
Color previews
#28df8f text on a black background
contrast 12.04:1
Card sample
#28df8f text on a white background
contrast 1.74:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #28df8f;
Background color
Panel with #28df8f background
background-color: #28df8f;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #28df8f;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 223, 143, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 223, 143, 0.45);
Border & gradient
Gradient panel
border: 3px solid #28df8f; background: linear-gradient(135deg, #28df8f, #28B5DF);