#040fff
a balanced, electric blue · warm · closest name: blue
RGB
4, 15, 255
HSL
237°, 100%, 51%
CMYK
98, 94, 0, 0
Luminance
0.0759
Every format
| HEX | #040fff |
| RGB | rgb(4, 15, 255) |
| HSL | hsl(237, 100%, 51%) |
| CMYK | cmyk(98%, 94%, 0%, 0%) |
| LAB | lab(33.1 76.9 -106.5) |
| LCH | lch(33.1 131.4 305.8) |
| OKLCH | oklch(0.458 0.309 264.4) |
Copy-ready code
/* CSS */
color: #040fff;
background-color: #040fff;
/* Tailwind (arbitrary) */
class="text-[#040fff] bg-[#040fff]"
/* SCSS */
$brand: #040fff;
/* SwiftUI */
Color(red: 0.016, green: 0.059, blue: 1.000)
/* Android */
Color.parseColor("#040fff")Accessibility — WCAG contrast
Aa
#040fff on white: 8.34:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040fff on black: 2.52:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green5.9%
Blue100.0%
CMYK percentages
Cyan98.4%
Magenta94.1%
Yellow0.0%
Key (black)0.0%
Color previews
#040fff text on a black background
contrast 2.52:1
Card sample
#040fff text on a white background
contrast 8.34:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040fff;
Background color
Panel with #040fff background
background-color: #040fff;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040fff;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 15, 255, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 15, 255, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040fff; background: linear-gradient(135deg, #040fff, #A004FF);