#040bdf
a dark, electric blue · warm · closest name: blue
RGB
4, 11, 223
HSL
238°, 97%, 45%
CMYK
98, 95, 0, 13
Luminance
0.0559
Every format
| HEX | #040bdf |
| RGB | rgb(4, 11, 223) |
| HSL | hsl(238, 97%, 45%) |
| CMYK | cmyk(98%, 95%, 0%, 13%) |
| LAB | lab(28.4 69.6 -96.3) |
| LCH | lch(28.4 118.8 305.9) |
| OKLCH | oklch(0.413 0.280 264.5) |
Copy-ready code
/* CSS */
color: #040bdf;
background-color: #040bdf;
/* Tailwind (arbitrary) */
class="text-[#040bdf] bg-[#040bdf]"
/* SCSS */
$brand: #040bdf;
/* SwiftUI */
Color(red: 0.016, green: 0.043, blue: 0.875)
/* Android */
Color.parseColor("#040bdf")Accessibility — WCAG contrast
Aa
#040bdf on white: 9.91:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040bdf on black: 2.12:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green4.3%
Blue87.5%
CMYK percentages
Cyan98.2%
Magenta95.1%
Yellow0.0%
Key (black)12.5%
Color previews
#040bdf text on a black background
contrast 2.12:1
Card sample
#040bdf text on a white background
contrast 9.91:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040bdf;
Background color
Panel with #040bdf background
background-color: #040bdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040bdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 11, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 11, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040bdf; background: linear-gradient(135deg, #040bdf, #8F04DF);