#aa0017
a dark, electric red · warm · closest name: firebrick
RGB
170, 0, 23
HSL
352°, 100%, 33%
CMYK
0, 100, 87, 33
Luminance
0.0861
Every format
| HEX | #aa0017 |
| RGB | rgb(170, 0, 23) |
| HSL | hsl(352, 100%, 33%) |
| CMYK | cmyk(0%, 100%, 87%, 33%) |
| LAB | lab(35.2 59.5 39.4) |
| LCH | lch(35.2 71.3 33.5) |
| OKLCH | oklch(0.465 0.189 25.5) |
Copy-ready code
/* CSS */
color: #aa0017;
background-color: #aa0017;
/* Tailwind (arbitrary) */
class="text-[#aa0017] bg-[#aa0017]"
/* SCSS */
$brand: #aa0017;
/* SwiftUI */
Color(red: 0.667, green: 0.000, blue: 0.090)
/* Android */
Color.parseColor("#aa0017")Accessibility — WCAG contrast
Aa
#aa0017 on white: 7.72:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#aa0017 on black: 2.72:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red66.7%
Green0.0%
Blue9.0%
CMYK percentages
Cyan0.0%
Magenta100.0%
Yellow86.5%
Key (black)33.3%
Color previews
#aa0017 text on a black background
contrast 2.72:1
Card sample
#aa0017 text on a white background
contrast 7.72:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #aa0017;
Background color
Panel with #aa0017 background
background-color: #aa0017;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #aa0017;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(170, 0, 23, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(170, 0, 23, 0.45);
Border & gradient
Gradient panel
border: 3px solid #aa0017; background: linear-gradient(135deg, #aa0017, #AA5A00);