#0055dd
a dark, electric blue · cool · closest name: royalblue
RGB
0, 85, 221
HSL
217°, 100%, 43%
CMYK
100, 62, 0, 13
Luminance
0.1172
Every format
| HEX | #0055dd |
| RGB | rgb(0, 85, 221) |
| HSL | hsl(217, 100%, 43%) |
| CMYK | cmyk(100%, 62%, 0%, 13%) |
| LAB | lab(40.8 33.1 -74.6) |
| LCH | lch(40.8 81.6 293.9) |
| OKLCH | oklch(0.501 0.219 261.2) |
Copy-ready code
/* CSS */
color: #0055dd;
background-color: #0055dd;
/* Tailwind (arbitrary) */
class="text-[#0055dd] bg-[#0055dd]"
/* SCSS */
$brand: #0055dd;
/* SwiftUI */
Color(red: 0.000, green: 0.333, blue: 0.867)
/* Android */
Color.parseColor("#0055dd")Accessibility — WCAG contrast
Aa
#0055dd on white: 6.28:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#0055dd on black: 3.34:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green33.3%
Blue86.7%
CMYK percentages
Cyan100.0%
Magenta61.5%
Yellow0.0%
Key (black)13.3%
Color previews
#0055dd text on a black background
contrast 3.34:1
Card sample
#0055dd text on a white background
contrast 6.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0055dd;
Background color
Panel with #0055dd background
background-color: #0055dd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0055dd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 85, 221, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 85, 221, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0055dd; background: linear-gradient(135deg, #0055dd, #3E00DD);