#646c21
a dark, vivid yellow · cool · closest name: olive
RGB
100, 108, 33
HSL
66°, 53%, 28%
CMYK
7, 0, 69, 58
Luminance
0.1354
Every format
| HEX | #646c21 |
| RGB | rgb(100, 108, 33) |
| HSL | hsl(66, 53%, 28%) |
| CMYK | cmyk(7%, 0%, 69%, 58%) |
| LAB | lab(43.6 -13.9 39.3) |
| LCH | lch(43.6 41.6 109.5) |
| OKLCH | oklch(0.509 0.098 115.2) |
Copy-ready code
/* CSS */
color: #646c21;
background-color: #646c21;
/* Tailwind (arbitrary) */
class="text-[#646c21] bg-[#646c21]"
/* SCSS */
$brand: #646c21;
/* SwiftUI */
Color(red: 0.392, green: 0.424, blue: 0.129)
/* Android */
Color.parseColor("#646c21")Accessibility — WCAG contrast
Aa
#646c21 on white: 5.66:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#646c21 on black: 3.71:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red39.2%
Green42.4%
Blue12.9%
CMYK percentages
Cyan7.4%
Magenta0.0%
Yellow69.4%
Key (black)57.6%
Color previews
#646c21 text on a black background
contrast 3.71:1
Card sample
#646c21 text on a white background
contrast 5.66:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #646c21;
Background color
Panel with #646c21 background
background-color: #646c21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #646c21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(100, 108, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(100, 108, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #646c21; background: linear-gradient(135deg, #646c21, #326C21);