#001721
a deep, electric cyan · cool · closest name: black
RGB
0, 23, 33
HSL
198°, 100%, 7%
CMYK
100, 30, 0, 87
Luminance
0.0072
Every format
| HEX | #001721 |
| RGB | rgb(0, 23, 33) |
| HSL | hsl(198, 100%, 7%) |
| CMYK | cmyk(100%, 30%, 0%, 87%) |
| LAB | lab(6.5 -4.3 -9.6) |
| LCH | lch(6.5 10.5 245.7) |
| OKLCH | oklch(0.191 0.037 227.9) |
Copy-ready code
/* CSS */
color: #001721;
background-color: #001721;
/* Tailwind (arbitrary) */
class="text-[#001721] bg-[#001721]"
/* SCSS */
$brand: #001721;
/* SwiftUI */
Color(red: 0.000, green: 0.090, blue: 0.129)
/* Android */
Color.parseColor("#001721")Accessibility — WCAG contrast
Aa
#001721 on white: 18.35:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#001721 on black: 1.14:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green9.0%
Blue12.9%
CMYK percentages
Cyan100.0%
Magenta30.3%
Yellow0.0%
Key (black)87.1%
Color previews
#001721 text on a black background
contrast 1.14:1
Card sample
#001721 text on a white background
contrast 18.35:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #001721;
Background color
Panel with #001721 background
background-color: #001721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #001721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 23, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 23, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #001721; background: linear-gradient(135deg, #001721, #000121);