#3f37eb
a balanced, electric blue · warm · closest name: blue
RGB
63, 55, 235
HSL
243°, 82%, 57%
CMYK
73, 77, 0, 8
Luminance
0.0979
Every format
| HEX | #3f37eb |
| RGB | rgb(63, 55, 235) |
| HSL | hsl(243, 82%, 57%) |
| CMYK | cmyk(73%, 77%, 0%, 8%) |
| LAB | lab(37.5 58.9 -87.9) |
| LCH | lch(37.5 105.8 303.8) |
| OKLCH | oklch(0.486 0.255 273.4) |
Copy-ready code
/* CSS */
color: #3f37eb;
background-color: #3f37eb;
/* Tailwind (arbitrary) */
class="text-[#3f37eb] bg-[#3f37eb]"
/* SCSS */
$brand: #3f37eb;
/* SwiftUI */
Color(red: 0.247, green: 0.216, blue: 0.922)
/* Android */
Color.parseColor("#3f37eb")Accessibility — WCAG contrast
Aa
#3f37eb on white: 7.10:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3f37eb on black: 2.96:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green21.6%
Blue92.2%
CMYK percentages
Cyan73.2%
Magenta76.6%
Yellow0.0%
Key (black)7.8%
Color previews
#3f37eb text on a black background
contrast 2.96:1
Card sample
#3f37eb text on a white background
contrast 7.10:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f37eb;
Background color
Panel with #3f37eb background
background-color: #3f37eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f37eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 55, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 55, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f37eb; background: linear-gradient(135deg, #3f37eb, #B737EB);