#28ffdf
a balanced, electric cyan · cool · closest name: aquamarine
RGB
40, 255, 223
HSL
171°, 100%, 58%
CMYK
84, 0, 13, 0
Luminance
0.7730
Every format
| HEX | #28ffdf |
| RGB | rgb(40, 255, 223) |
| HSL | hsl(171, 100%, 58%) |
| CMYK | cmyk(84%, 0%, 13%, 0%) |
| LAB | lab(90.5 -55.4 1.5) |
| LCH | lch(90.5 55.4 178.4) |
| OKLCH | oklch(0.898 0.159 178.9) |
Copy-ready code
/* CSS */
color: #28ffdf;
background-color: #28ffdf;
/* Tailwind (arbitrary) */
class="text-[#28ffdf] bg-[#28ffdf]"
/* SCSS */
$brand: #28ffdf;
/* SwiftUI */
Color(red: 0.157, green: 1.000, blue: 0.875)
/* Android */
Color.parseColor("#28ffdf")Accessibility — WCAG contrast
Aa
#28ffdf on white: 1.28:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#28ffdf on black: 16.46:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green100.0%
Blue87.5%
CMYK percentages
Cyan84.3%
Magenta0.0%
Yellow12.5%
Key (black)0.0%
Color previews
#28ffdf text on a black background
contrast 16.46:1
Card sample
#28ffdf text on a white background
contrast 1.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #28ffdf;
Background color
Panel with #28ffdf background
background-color: #28ffdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #28ffdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 255, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 255, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #28ffdf; background: linear-gradient(135deg, #28ffdf, #288FFF);