#003388
a dark, electric blue · cool · closest name: midnightblue
RGB
0, 51, 136
HSL
218°, 100%, 27%
CMYK
100, 63, 0, 47
Luminance
0.0415
Every format
| HEX | #003388 |
| RGB | rgb(0, 51, 136) |
| HSL | hsl(218, 100%, 27%) |
| CMYK | cmyk(100%, 63%, 0%, 47%) |
| LAB | lab(24.1 21.8 -51.3) |
| LCH | lch(24.1 55.7 293.1) |
| OKLCH | oklch(0.354 0.150 260.7) |
Copy-ready code
/* CSS */
color: #003388;
background-color: #003388;
/* Tailwind (arbitrary) */
class="text-[#003388] bg-[#003388]"
/* SCSS */
$brand: #003388;
/* SwiftUI */
Color(red: 0.000, green: 0.200, blue: 0.533)
/* Android */
Color.parseColor("#003388")Accessibility — WCAG contrast
Aa
#003388 on white: 11.48:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#003388 on black: 1.83:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green20.0%
Blue53.3%
CMYK percentages
Cyan100.0%
Magenta62.5%
Yellow0.0%
Key (black)46.7%
Color previews
#003388 text on a black background
contrast 1.83:1
Card sample
#003388 text on a white background
contrast 11.48:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #003388;
Background color
Panel with #003388 background
background-color: #003388;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #003388;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 51, 136, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 51, 136, 0.45);
Border & gradient
Gradient panel
border: 3px solid #003388; background: linear-gradient(135deg, #003388, #280088);