#28c9df
a balanced, vivid cyan · cool · closest name: skyblue
RGB
40, 201, 223
HSL
187°, 74%, 52%
CMYK
82, 10, 0, 13
Luminance
0.4755
Every format
| HEX | #28c9df |
| RGB | rgb(40, 201, 223) |
| HSL | hsl(187, 74%, 52%) |
| CMYK | cmyk(82%, 10%, 0%, 13%) |
| LAB | lab(74.5 -31.6 -22.2) |
| LCH | lch(74.5 38.6 215.1) |
| OKLCH | oklch(0.768 0.126 209.4) |
Copy-ready code
/* CSS */
color: #28c9df;
background-color: #28c9df;
/* Tailwind (arbitrary) */
class="text-[#28c9df] bg-[#28c9df]"
/* SCSS */
$brand: #28c9df;
/* SwiftUI */
Color(red: 0.157, green: 0.788, blue: 0.875)
/* Android */
Color.parseColor("#28c9df")Accessibility — WCAG contrast
Aa
#28c9df on white: 2.00:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#28c9df on black: 10.51:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green78.8%
Blue87.5%
CMYK percentages
Cyan82.1%
Magenta9.9%
Yellow0.0%
Key (black)12.5%
Color previews
#28c9df text on a black background
contrast 10.51:1
Card sample
#28c9df text on a white background
contrast 2.00:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #28c9df;
Background color
Panel with #28c9df background
background-color: #28c9df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #28c9df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 201, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 201, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #28c9df; background: linear-gradient(135deg, #28c9df, #284FDF);