#003fd3
a dark, electric blue · cool · closest name: slateblue
RGB
0, 63, 211
HSL
222°, 100%, 41%
CMYK
100, 70, 0, 17
Luminance
0.0826
Every format
| HEX | #003fd3 |
| RGB | rgb(0, 63, 211) |
| HSL | hsl(222, 100%, 41%) |
| CMYK | cmyk(100%, 70%, 0%, 17%) |
| LAB | lab(34.5 43.4 -79.1) |
| LCH | lch(34.5 90.2 298.7) |
| OKLCH | oklch(0.452 0.231 263.1) |
Copy-ready code
/* CSS */
color: #003fd3;
background-color: #003fd3;
/* Tailwind (arbitrary) */
class="text-[#003fd3] bg-[#003fd3]"
/* SCSS */
$brand: #003fd3;
/* SwiftUI */
Color(red: 0.000, green: 0.247, blue: 0.827)
/* Android */
Color.parseColor("#003fd3")Accessibility — WCAG contrast
Aa
#003fd3 on white: 7.92:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#003fd3 on black: 2.65:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green24.7%
Blue82.7%
CMYK percentages
Cyan100.0%
Magenta70.1%
Yellow0.0%
Key (black)17.3%
Color previews
#003fd3 text on a black background
contrast 2.65:1
Card sample
#003fd3 text on a white background
contrast 7.92:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #003fd3;
Background color
Panel with #003fd3 background
background-color: #003fd3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #003fd3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 63, 211, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 63, 211, 0.45);
Border & gradient
Gradient panel
border: 3px solid #003fd3; background: linear-gradient(135deg, #003fd3, #4E00D3);