#66ad21
a dark, vivid green · cool · closest name: forestgreen
RGB
102, 173, 33
HSL
90°, 68%, 40%
CMYK
41, 0, 81, 32
Luminance
0.3282
Every format
| HEX | #66ad21 |
| RGB | rgb(102, 173, 33) |
| HSL | hsl(90, 68%, 40%) |
| CMYK | cmyk(41%, 0%, 81%, 32%) |
| LAB | lab(64.0 -44.1 59.1) |
| LCH | lch(64.0 73.7 126.7) |
| OKLCH | oklch(0.675 0.180 133.6) |
Copy-ready code
/* CSS */
color: #66ad21;
background-color: #66ad21;
/* Tailwind (arbitrary) */
class="text-[#66ad21] bg-[#66ad21]"
/* SCSS */
$brand: #66ad21;
/* SwiftUI */
Color(red: 0.400, green: 0.678, blue: 0.129)
/* Android */
Color.parseColor("#66ad21")Accessibility — WCAG contrast
Aa
#66ad21 on white: 2.78:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ad21 on black: 7.56:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green67.8%
Blue12.9%
CMYK percentages
Cyan41.0%
Magenta0.0%
Yellow80.9%
Key (black)32.2%
Color previews
#66ad21 text on a black background
contrast 7.56:1
Card sample
#66ad21 text on a white background
contrast 2.78:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ad21;
Background color
Panel with #66ad21 background
background-color: #66ad21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ad21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 173, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 173, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ad21; background: linear-gradient(135deg, #66ad21, #21AD39);