#040cdb
a dark, electric blue · warm · closest name: blue
RGB
4, 12, 219
HSL
238°, 96%, 44%
CMYK
98, 95, 0, 14
Luminance
0.0540
Every format
| HEX | #040cdb |
| RGB | rgb(4, 12, 219) |
| HSL | hsl(238, 96%, 44%) |
| CMYK | cmyk(98%, 95%, 0%, 14%) |
| LAB | lab(27.9 68.4 -94.8) |
| LCH | lch(27.9 116.9 305.8) |
| OKLCH | oklch(0.408 0.275 264.5) |
Copy-ready code
/* CSS */
color: #040cdb;
background-color: #040cdb;
/* Tailwind (arbitrary) */
class="text-[#040cdb] bg-[#040cdb]"
/* SCSS */
$brand: #040cdb;
/* SwiftUI */
Color(red: 0.016, green: 0.047, blue: 0.859)
/* Android */
Color.parseColor("#040cdb")Accessibility — WCAG contrast
Aa
#040cdb on white: 10.09:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040cdb on black: 2.08:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green4.7%
Blue85.9%
CMYK percentages
Cyan98.2%
Magenta94.5%
Yellow0.0%
Key (black)14.1%
Color previews
#040cdb text on a black background
contrast 2.08:1
Card sample
#040cdb text on a white background
contrast 10.09:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040cdb;
Background color
Panel with #040cdb background
background-color: #040cdb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040cdb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 12, 219, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 12, 219, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040cdb; background: linear-gradient(135deg, #040cdb, #8B04DB);