#0055aa
a dark, electric blue · cool · closest name: royalblue
RGB
0, 85, 170
HSL
210°, 100%, 33%
CMYK
100, 50, 0, 33
Luminance
0.0940
Every format
| HEX | #0055aa |
| RGB | rgb(0, 85, 170) |
| HSL | hsl(210, 100%, 33%) |
| CMYK | cmyk(100%, 50%, 0%, 33%) |
| LAB | lab(36.7 12.6 -51.5) |
| LCH | lch(36.7 53.0 283.8) |
| OKLCH | oklch(0.458 0.153 255.4) |
Copy-ready code
/* CSS */
color: #0055aa;
background-color: #0055aa;
/* Tailwind (arbitrary) */
class="text-[#0055aa] bg-[#0055aa]"
/* SCSS */
$brand: #0055aa;
/* SwiftUI */
Color(red: 0.000, green: 0.333, blue: 0.667)
/* Android */
Color.parseColor("#0055aa")Accessibility — WCAG contrast
Aa
#0055aa on white: 7.29:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0055aa on black: 2.88:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green33.3%
Blue66.7%
CMYK percentages
Cyan100.0%
Magenta50.0%
Yellow0.0%
Key (black)33.3%
Color previews
#0055aa text on a black background
contrast 2.88:1
Card sample
#0055aa text on a white background
contrast 7.29:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0055aa;
Background color
Panel with #0055aa background
background-color: #0055aa;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0055aa;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 85, 170, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 85, 170, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0055aa; background: linear-gradient(135deg, #0055aa, #1C00AA);