#040fdf
a dark, electric blue · warm · closest name: blue
RGB
4, 15, 223
HSL
237°, 97%, 45%
CMYK
98, 93, 0, 13
Luminance
0.0570
Every format
| HEX | #040fdf |
| RGB | rgb(4, 15, 223) |
| HSL | hsl(237, 97%, 45%) |
| CMYK | cmyk(98%, 93%, 0%, 13%) |
| LAB | lab(28.6 68.8 -95.8) |
| LCH | lch(28.6 117.9 305.7) |
| OKLCH | oklch(0.415 0.278 264.5) |
Copy-ready code
/* CSS */
color: #040fdf;
background-color: #040fdf;
/* Tailwind (arbitrary) */
class="text-[#040fdf] bg-[#040fdf]"
/* SCSS */
$brand: #040fdf;
/* SwiftUI */
Color(red: 0.016, green: 0.059, blue: 0.875)
/* Android */
Color.parseColor("#040fdf")Accessibility — WCAG contrast
Aa
#040fdf on white: 9.82:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040fdf on black: 2.14:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green5.9%
Blue87.5%
CMYK percentages
Cyan98.2%
Magenta93.3%
Yellow0.0%
Key (black)12.5%
Color previews
#040fdf text on a black background
contrast 2.14:1
Card sample
#040fdf text on a white background
contrast 9.82:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040fdf;
Background color
Panel with #040fdf background
background-color: #040fdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040fdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 15, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 15, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040fdf; background: linear-gradient(135deg, #040fdf, #8B04DF);