#28fdf4
a balanced, electric cyan · cool · closest name: cyan
RGB
40, 253, 244
HSL
178°, 98%, 58%
CMYK
84, 0, 4, 1
Luminance
0.7723
Every format
| HEX | #28fdf4 |
| RGB | rgb(40, 253, 244) |
| HSL | hsl(178, 98%, 58%) |
| CMYK | cmyk(84%, 0%, 4%, 1%) |
| LAB | lab(90.4 -49.0 -9.4) |
| LCH | lch(90.4 49.9 190.9) |
| OKLCH | oklch(0.899 0.150 190.1) |
Copy-ready code
/* CSS */
color: #28fdf4;
background-color: #28fdf4;
/* Tailwind (arbitrary) */
class="text-[#28fdf4] bg-[#28fdf4]"
/* SCSS */
$brand: #28fdf4;
/* SwiftUI */
Color(red: 0.157, green: 0.992, blue: 0.957)
/* Android */
Color.parseColor("#28fdf4")Accessibility — WCAG contrast
Aa
#28fdf4 on white: 1.28:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#28fdf4 on black: 16.45:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green99.2%
Blue95.7%
CMYK percentages
Cyan84.2%
Magenta0.0%
Yellow3.6%
Key (black)0.8%
Color previews
#28fdf4 text on a black background
contrast 16.45:1
Card sample
#28fdf4 text on a white background
contrast 1.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #28fdf4;
Background color
Panel with #28fdf4 background
background-color: #28fdf4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #28fdf4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 253, 244, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 253, 244, 0.45);
Border & gradient
Gradient panel
border: 3px solid #28fdf4; background: linear-gradient(135deg, #28fdf4, #2878FD);