#3f7def
a balanced, electric blue · cool · closest name: royalblue
RGB
63, 125, 239
HSL
219°, 85%, 59%
CMYK
74, 48, 0, 6
Luminance
0.2196
Every format
| HEX | #3f7def |
| RGB | rgb(63, 125, 239) |
| HSL | hsl(219, 85%, 59%) |
| CMYK | cmyk(74%, 48%, 0%, 6%) |
| LAB | lab(54.0 18.6 -63.2) |
| LCH | lch(54.0 65.9 286.4) |
| OKLCH | oklch(0.609 0.184 261.3) |
Copy-ready code
/* CSS */
color: #3f7def;
background-color: #3f7def;
/* Tailwind (arbitrary) */
class="text-[#3f7def] bg-[#3f7def]"
/* SCSS */
$brand: #3f7def;
/* SwiftUI */
Color(red: 0.247, green: 0.490, blue: 0.937)
/* Android */
Color.parseColor("#3f7def")Accessibility — WCAG contrast
Aa
#3f7def on white: 3.90:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3f7def on black: 5.39:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green49.0%
Blue93.7%
CMYK percentages
Cyan73.6%
Magenta47.7%
Yellow0.0%
Key (black)6.3%
Color previews
#3f7def text on a black background
contrast 5.39:1
Card sample
#3f7def text on a white background
contrast 3.90:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f7def;
Background color
Panel with #3f7def background
background-color: #3f7def;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f7def;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 125, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 125, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f7def; background: linear-gradient(135deg, #3f7def, #763FEF);