#0000dd
a dark, electric blue · warm · closest name: blue
RGB
0, 0, 221
HSL
240°, 100%, 43%
CMYK
100, 100, 0, 13
Luminance
0.0522
Every format
| HEX | #0000dd |
| RGB | rgb(0, 0, 221) |
| HSL | hsl(240, 100%, 43%) |
| CMYK | cmyk(100%, 100%, 0%, 13%) |
| LAB | lab(27.4 71.1 -96.8) |
| LCH | lch(27.4 120.1 306.3) |
| OKLCH | oklch(0.406 0.281 264.1) |
Copy-ready code
/* CSS */
color: #0000dd;
background-color: #0000dd;
/* Tailwind (arbitrary) */
class="text-[#0000dd] bg-[#0000dd]"
/* SCSS */
$brand: #0000dd;
/* SwiftUI */
Color(red: 0.000, green: 0.000, blue: 0.867)
/* Android */
Color.parseColor("#0000dd")Accessibility — WCAG contrast
Aa
#0000dd on white: 10.27:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0000dd on black: 2.04:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green0.0%
Blue86.7%
CMYK percentages
Cyan100.0%
Magenta100.0%
Yellow0.0%
Key (black)13.3%
Color previews
#0000dd text on a black background
contrast 2.04:1
Card sample
#0000dd text on a white background
contrast 10.27:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0000dd;
Background color
Panel with #0000dd background
background-color: #0000dd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0000dd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 0, 221, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 0, 221, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0000dd; background: linear-gradient(135deg, #0000dd, #9300DD);