#aa0011
a dark, electric red · warm · closest name: firebrick
RGB
170, 0, 17
HSL
354°, 100%, 33%
CMYK
0, 100, 90, 33
Luminance
0.0859
Every format
| HEX | #aa0011 |
| RGB | rgb(170, 0, 17) |
| HSL | hsl(354, 100%, 33%) |
| CMYK | cmyk(0%, 100%, 90%, 33%) |
| LAB | lab(35.2 59.3 42.4) |
| LCH | lch(35.2 72.9 35.6) |
| OKLCH | oklch(0.464 0.189 26.8) |
Copy-ready code
/* CSS */
color: #aa0011;
background-color: #aa0011;
/* Tailwind (arbitrary) */
class="text-[#aa0011] bg-[#aa0011]"
/* SCSS */
$brand: #aa0011;
/* SwiftUI */
Color(red: 0.667, green: 0.000, blue: 0.067)
/* Android */
Color.parseColor("#aa0011")Accessibility — WCAG contrast
Aa
#aa0011 on white: 7.73:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#aa0011 on black: 2.72:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red66.7%
Green0.0%
Blue6.7%
CMYK percentages
Cyan0.0%
Magenta100.0%
Yellow90.0%
Key (black)33.3%
Color previews
#aa0011 text on a black background
contrast 2.72:1
Card sample
#aa0011 text on a white background
contrast 7.73:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #aa0011;
Background color
Panel with #aa0011 background
background-color: #aa0011;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #aa0011;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(170, 0, 17, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(170, 0, 17, 0.45);
Border & gradient
Gradient panel
border: 3px solid #aa0011; background: linear-gradient(135deg, #aa0011, #AA6000);