#28df91
a balanced, vivid green · cool · closest name: aquamarine
RGB
40, 223, 145
HSL
154°, 74%, 52%
CMYK
82, 0, 35, 13
Luminance
0.5527
Every format
| HEX | #28df91 |
| RGB | rgb(40, 223, 145) |
| HSL | hsl(154, 74%, 52%) |
| CMYK | cmyk(82%, 0%, 35%, 13%) |
| LAB | lab(79.2 -61.1 26.2) |
| LCH | lch(79.2 66.5 156.8) |
| OKLCH | oklch(0.800 0.178 158.3) |
Copy-ready code
/* CSS */
color: #28df91;
background-color: #28df91;
/* Tailwind (arbitrary) */
class="text-[#28df91] bg-[#28df91]"
/* SCSS */
$brand: #28df91;
/* SwiftUI */
Color(red: 0.157, green: 0.875, blue: 0.569)
/* Android */
Color.parseColor("#28df91")Accessibility — WCAG contrast
Aa
#28df91 on white: 1.74:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#28df91 on black: 12.05:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green87.5%
Blue56.9%
CMYK percentages
Cyan82.1%
Magenta0.0%
Yellow35.0%
Key (black)12.5%
Color previews
#28df91 text on a black background
contrast 12.05:1
Card sample
#28df91 text on a white background
contrast 1.74:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #28df91;
Background color
Panel with #28df91 background
background-color: #28df91;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #28df91;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 223, 145, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 223, 145, 0.45);
Border & gradient
Gradient panel
border: 3px solid #28df91; background: linear-gradient(135deg, #28df91, #28B3DF);