#040af4
a balanced, electric blue · warm · closest name: blue
RGB
4, 10, 244
HSL
239°, 97%, 49%
CMYK
98, 96, 0, 4
Luminance
0.0677
Every format
| HEX | #040af4 |
| RGB | rgb(4, 10, 244) |
| HSL | hsl(239, 97%, 49%) |
| CMYK | cmyk(98%, 96%, 0%, 4%) |
| LAB | lab(31.3 75.0 -103.4) |
| LCH | lch(31.3 127.7 306.0) |
| OKLCH | oklch(0.441 0.300 264.4) |
Copy-ready code
/* CSS */
color: #040af4;
background-color: #040af4;
/* Tailwind (arbitrary) */
class="text-[#040af4] bg-[#040af4]"
/* SCSS */
$brand: #040af4;
/* SwiftUI */
Color(red: 0.016, green: 0.039, blue: 0.957)
/* Android */
Color.parseColor("#040af4")Accessibility — WCAG contrast
Aa
#040af4 on white: 8.92:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040af4 on black: 2.35:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green3.9%
Blue95.7%
CMYK percentages
Cyan98.4%
Magenta95.9%
Yellow0.0%
Key (black)4.3%
Color previews
#040af4 text on a black background
contrast 2.35:1
Card sample
#040af4 text on a white background
contrast 8.92:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040af4;
Background color
Panel with #040af4 background
background-color: #040af4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040af4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 10, 244, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 10, 244, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040af4; background: linear-gradient(135deg, #040af4, #9E04F4);