#045cfb
a balanced, electric blue · cool · closest name: royalblue
RGB
4, 92, 251
HSL
219°, 97%, 50%
CMYK
98, 63, 0, 2
Luminance
0.1465
Every format
| HEX | #045cfb |
| RGB | rgb(4, 92, 251) |
| HSL | hsl(219, 97%, 50%) |
| CMYK | cmyk(98%, 63%, 0%, 2%) |
| LAB | lab(45.1 40.1 -84.3) |
| LCH | lch(45.1 93.4 295.4) |
| OKLCH | oklch(0.542 0.247 262.0) |
Copy-ready code
/* CSS */
color: #045cfb;
background-color: #045cfb;
/* Tailwind (arbitrary) */
class="text-[#045cfb] bg-[#045cfb]"
/* SCSS */
$brand: #045cfb;
/* SwiftUI */
Color(red: 0.016, green: 0.361, blue: 0.984)
/* Android */
Color.parseColor("#045cfb")Accessibility — WCAG contrast
Aa
#045cfb on white: 5.34:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#045cfb on black: 3.93:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green36.1%
Blue98.4%
CMYK percentages
Cyan98.4%
Magenta63.3%
Yellow0.0%
Key (black)1.6%
Color previews
#045cfb text on a black background
contrast 3.93:1
Card sample
#045cfb text on a white background
contrast 5.34:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #045cfb;
Background color
Panel with #045cfb background
background-color: #045cfb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #045cfb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 92, 251, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 92, 251, 0.45);
Border & gradient
Gradient panel
border: 3px solid #045cfb; background: linear-gradient(135deg, #045cfb, #5104FB);