#000a21
a deep, electric blue · cool · closest name: black
RGB
0, 10, 33
HSL
222°, 100%, 7%
CMYK
100, 70, 0, 87
Luminance
0.0033
Every format
| HEX | #000a21 |
| RGB | rgb(0, 10, 33) |
| HSL | hsl(222, 100%, 7%) |
| CMYK | cmyk(100%, 70%, 0%, 87%) |
| LAB | lab(3.0 3.0 -15.1) |
| LCH | lch(3.0 15.4 281.1) |
| OKLCH | oklch(0.150 0.053 257.1) |
Copy-ready code
/* CSS */
color: #000a21;
background-color: #000a21;
/* Tailwind (arbitrary) */
class="text-[#000a21] bg-[#000a21]"
/* SCSS */
$brand: #000a21;
/* SwiftUI */
Color(red: 0.000, green: 0.039, blue: 0.129)
/* Android */
Color.parseColor("#000a21")Accessibility — WCAG contrast
Aa
#000a21 on white: 19.71:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#000a21 on black: 1.07:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green3.9%
Blue12.9%
CMYK percentages
Cyan100.0%
Magenta69.7%
Yellow0.0%
Key (black)87.1%
Color previews
#000a21 text on a black background
contrast 1.07:1
Card sample
#000a21 text on a white background
contrast 19.71:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #000a21;
Background color
Panel with #000a21 background
background-color: #000a21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #000a21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 10, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 10, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #000a21; background: linear-gradient(135deg, #000a21, #0C0021);