#28ade9
a balanced, electric cyan · cool · closest name: steelblue
RGB
40, 173, 233
HSL
199°, 81%, 54%
CMYK
83, 26, 0, 9
Luminance
0.3622
Every format
| HEX | #28ade9 |
| RGB | rgb(40, 173, 233) |
| HSL | hsl(199, 81%, 54%) |
| CMYK | cmyk(83%, 26%, 0%, 9%) |
| LAB | lab(66.7 -14.0 -39.7) |
| LCH | lch(66.7 42.1 250.6) |
| OKLCH | oklch(0.706 0.138 234.3) |
Copy-ready code
/* CSS */
color: #28ade9;
background-color: #28ade9;
/* Tailwind (arbitrary) */
class="text-[#28ade9] bg-[#28ade9]"
/* SCSS */
$brand: #28ade9;
/* SwiftUI */
Color(red: 0.157, green: 0.678, blue: 0.914)
/* Android */
Color.parseColor("#28ade9")Accessibility — WCAG contrast
Aa
#28ade9 on white: 2.55:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#28ade9 on black: 8.24:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green67.8%
Blue91.4%
CMYK percentages
Cyan82.8%
Magenta25.8%
Yellow0.0%
Key (black)8.6%
Color previews
#28ade9 text on a black background
contrast 8.24:1
Card sample
#28ade9 text on a white background
contrast 2.55:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #28ade9;
Background color
Panel with #28ade9 background
background-color: #28ade9;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #28ade9;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 173, 233, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 173, 233, 0.45);
Border & gradient
Gradient panel
border: 3px solid #28ade9; background: linear-gradient(135deg, #28ade9, #282CE9);