#3f9fef
a balanced, electric blue · cool · closest name: steelblue
RGB
63, 159, 239
HSL
207°, 85%, 59%
CMYK
74, 34, 0, 6
Luminance
0.3209
Every format
| HEX | #3f9fef |
| RGB | rgb(63, 159, 239) |
| HSL | hsl(207, 85%, 59%) |
| CMYK | cmyk(74%, 34%, 0%, 6%) |
| LAB | lab(63.4 -1.8 -48.1) |
| LCH | lch(63.4 48.2 267.9) |
| OKLCH | oklch(0.683 0.148 247.4) |
Copy-ready code
/* CSS */
color: #3f9fef;
background-color: #3f9fef;
/* Tailwind (arbitrary) */
class="text-[#3f9fef] bg-[#3f9fef]"
/* SCSS */
$brand: #3f9fef;
/* SwiftUI */
Color(red: 0.247, green: 0.624, blue: 0.937)
/* Android */
Color.parseColor("#3f9fef")Accessibility — WCAG contrast
Aa
#3f9fef on white: 2.83:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#3f9fef on black: 7.42:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green62.4%
Blue93.7%
CMYK percentages
Cyan73.6%
Magenta33.5%
Yellow0.0%
Key (black)6.3%
Color previews
#3f9fef text on a black background
contrast 7.42:1
Card sample
#3f9fef text on a white background
contrast 2.83:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f9fef;
Background color
Panel with #3f9fef background
background-color: #3f9fef;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f9fef;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 159, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 159, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f9fef; background: linear-gradient(135deg, #3f9fef, #543FEF);