#666a21
a dark, vivid yellow · cool · closest name: olive
RGB
102, 106, 33
HSL
63°, 53%, 27%
CMYK
4, 0, 69, 58
Luminance
0.1324
Every format
| HEX | #666a21 |
| RGB | rgb(102, 106, 33) |
| HSL | hsl(63, 53%, 27%) |
| CMYK | cmyk(4%, 0%, 69%, 58%) |
| LAB | lab(43.1 -11.9 38.8) |
| LCH | lch(43.1 40.6 107.0) |
| OKLCH | oklch(0.506 0.095 112.3) |
Copy-ready code
/* CSS */
color: #666a21;
background-color: #666a21;
/* Tailwind (arbitrary) */
class="text-[#666a21] bg-[#666a21]"
/* SCSS */
$brand: #666a21;
/* SwiftUI */
Color(red: 0.400, green: 0.416, blue: 0.129)
/* Android */
Color.parseColor("#666a21")Accessibility — WCAG contrast
Aa
#666a21 on white: 5.76:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#666a21 on black: 3.65:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green41.6%
Blue12.9%
CMYK percentages
Cyan3.8%
Magenta0.0%
Yellow68.9%
Key (black)58.4%
Color previews
#666a21 text on a black background
contrast 3.65:1
Card sample
#666a21 text on a white background
contrast 5.76:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666a21;
Background color
Panel with #666a21 background
background-color: #666a21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666a21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 106, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 106, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666a21; background: linear-gradient(135deg, #666a21, #356A21);