#3b9ddf
a balanced, vivid blue · cool · closest name: steelblue
RGB
59, 157, 223
HSL
204°, 72%, 55%
CMYK
74, 30, 0, 13
Luminance
0.3037
Every format
| HEX | #3b9ddf |
| RGB | rgb(59, 157, 223) |
| HSL | hsl(204, 72%, 55%) |
| CMYK | cmyk(74%, 30%, 0%, 13%) |
| LAB | lab(62.0 -6.7 -41.6) |
| LCH | lch(62.0 42.1 260.9) |
| OKLCH | oklch(0.668 0.133 242.3) |
Copy-ready code
/* CSS */
color: #3b9ddf;
background-color: #3b9ddf;
/* Tailwind (arbitrary) */
class="text-[#3b9ddf] bg-[#3b9ddf]"
/* SCSS */
$brand: #3b9ddf;
/* SwiftUI */
Color(red: 0.231, green: 0.616, blue: 0.875)
/* Android */
Color.parseColor("#3b9ddf")Accessibility — WCAG contrast
Aa
#3b9ddf on white: 2.97:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#3b9ddf on black: 7.07:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red23.1%
Green61.6%
Blue87.5%
CMYK percentages
Cyan73.5%
Magenta29.6%
Yellow0.0%
Key (black)12.5%
Color previews
#3b9ddf text on a black background
contrast 7.07:1
Card sample
#3b9ddf text on a white background
contrast 2.97:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3b9ddf;
Background color
Panel with #3b9ddf background
background-color: #3b9ddf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3b9ddf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(59, 157, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(59, 157, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3b9ddf; background: linear-gradient(135deg, #3b9ddf, #463BDF);