#0451eb
a balanced, electric blue · cool · closest name: royalblue
RGB
4, 81, 235
HSL
220°, 97%, 47%
CMYK
98, 66, 0, 8
Luminance
0.1191
Every format
| HEX | #0451eb |
| RGB | rgb(4, 81, 235) |
| HSL | hsl(220, 97%, 47%) |
| CMYK | cmyk(98%, 66%, 0%, 8%) |
| LAB | lab(41.1 41.1 -82.0) |
| LCH | lch(41.1 91.7 296.6) |
| OKLCH | oklch(0.507 0.240 262.5) |
Copy-ready code
/* CSS */
color: #0451eb;
background-color: #0451eb;
/* Tailwind (arbitrary) */
class="text-[#0451eb] bg-[#0451eb]"
/* SCSS */
$brand: #0451eb;
/* SwiftUI */
Color(red: 0.016, green: 0.318, blue: 0.922)
/* Android */
Color.parseColor("#0451eb")Accessibility — WCAG contrast
Aa
#0451eb on white: 6.21:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#0451eb on black: 3.38:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green31.8%
Blue92.2%
CMYK percentages
Cyan98.3%
Magenta65.5%
Yellow0.0%
Key (black)7.8%
Color previews
#0451eb text on a black background
contrast 3.38:1
Card sample
#0451eb text on a white background
contrast 6.21:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0451eb;
Background color
Panel with #0451eb background
background-color: #0451eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0451eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 81, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 81, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0451eb; background: linear-gradient(135deg, #0451eb, #5104EB);