#3f57eb
a balanced, electric blue · warm · closest name: royalblue
RGB
63, 87, 235
HSL
232°, 81%, 58%
CMYK
73, 63, 0, 8
Luminance
0.1387
Every format
| HEX | #3f57eb |
| RGB | rgb(63, 87, 235) |
| HSL | hsl(232, 81%, 58%) |
| CMYK | cmyk(73%, 63%, 0%, 8%) |
| LAB | lab(44.0 40.8 -77.1) |
| LCH | lch(44.0 87.2 297.9) |
| OKLCH | oklch(0.534 0.223 269.8) |
Copy-ready code
/* CSS */
color: #3f57eb;
background-color: #3f57eb;
/* Tailwind (arbitrary) */
class="text-[#3f57eb] bg-[#3f57eb]"
/* SCSS */
$brand: #3f57eb;
/* SwiftUI */
Color(red: 0.247, green: 0.341, blue: 0.922)
/* Android */
Color.parseColor("#3f57eb")Accessibility — WCAG contrast
Aa
#3f57eb on white: 5.56:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3f57eb on black: 3.77:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green34.1%
Blue92.2%
CMYK percentages
Cyan73.2%
Magenta63.0%
Yellow0.0%
Key (black)7.8%
Color previews
#3f57eb text on a black background
contrast 3.77:1
Card sample
#3f57eb text on a white background
contrast 5.56:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f57eb;
Background color
Panel with #3f57eb background
background-color: #3f57eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f57eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 87, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 87, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f57eb; background: linear-gradient(135deg, #3f57eb, #9A3FEB);