#0551cf
a dark, electric blue · cool · closest name: royalblue
RGB
5, 81, 207
HSL
217°, 95%, 42%
CMYK
98, 61, 0, 19
Luminance
0.1042
Every format
| HEX | #0551cf |
| RGB | rgb(5, 81, 207) |
| HSL | hsl(217, 95%, 42%) |
| CMYK | cmyk(98%, 61%, 0%, 19%) |
| LAB | lab(38.6 30.4 -70.1) |
| LCH | lch(38.6 76.4 293.5) |
| OKLCH | oklch(0.481 0.206 261.2) |
Copy-ready code
/* CSS */
color: #0551cf;
background-color: #0551cf;
/* Tailwind (arbitrary) */
class="text-[#0551cf] bg-[#0551cf]"
/* SCSS */
$brand: #0551cf;
/* SwiftUI */
Color(red: 0.020, green: 0.318, blue: 0.812)
/* Android */
Color.parseColor("#0551cf")Accessibility — WCAG contrast
Aa
#0551cf on white: 6.81:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#0551cf on black: 3.08:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red2.0%
Green31.8%
Blue81.2%
CMYK percentages
Cyan97.6%
Magenta60.9%
Yellow0.0%
Key (black)18.8%
Color previews
#0551cf text on a black background
contrast 3.08:1
Card sample
#0551cf text on a white background
contrast 6.81:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0551cf;
Background color
Panel with #0551cf background
background-color: #0551cf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0551cf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(5, 81, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(5, 81, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0551cf; background: linear-gradient(135deg, #0551cf, #4005CF);