#66ac21
a dark, vivid green · cool · closest name: forestgreen
RGB
102, 172, 33
HSL
90°, 68%, 40%
CMYK
41, 0, 81, 33
Luminance
0.3244
Every format
| HEX | #66ac21 |
| RGB | rgb(102, 172, 33) |
| HSL | hsl(90, 68%, 40%) |
| CMYK | cmyk(41%, 0%, 81%, 33%) |
| LAB | lab(63.7 -43.7 58.8) |
| LCH | lch(63.7 73.2 126.6) |
| OKLCH | oklch(0.672 0.179 133.5) |
Copy-ready code
/* CSS */
color: #66ac21;
background-color: #66ac21;
/* Tailwind (arbitrary) */
class="text-[#66ac21] bg-[#66ac21]"
/* SCSS */
$brand: #66ac21;
/* SwiftUI */
Color(red: 0.400, green: 0.675, blue: 0.129)
/* Android */
Color.parseColor("#66ac21")Accessibility — WCAG contrast
Aa
#66ac21 on white: 2.80:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ac21 on black: 7.49:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green67.5%
Blue12.9%
CMYK percentages
Cyan40.7%
Magenta0.0%
Yellow80.8%
Key (black)32.5%
Color previews
#66ac21 text on a black background
contrast 7.49:1
Card sample
#66ac21 text on a white background
contrast 2.80:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ac21;
Background color
Panel with #66ac21 background
background-color: #66ac21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ac21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 172, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 172, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ac21; background: linear-gradient(135deg, #66ac21, #21AC39);