#178d21
a dark, vivid green · cool · closest name: forestgreen
RGB
23, 141, 33
HSL
125°, 72%, 32%
CMYK
84, 0, 77, 45
Luminance
0.1934
Every format
| HEX | #178d21 |
| RGB | rgb(23, 141, 33) |
| HSL | hsl(125, 72%, 32%) |
| CMYK | cmyk(84%, 0%, 77%, 45%) |
| LAB | lab(51.1 -51.9 45.8) |
| LCH | lch(51.1 69.3 138.6) |
| OKLCH | oklch(0.561 0.174 143.6) |
Copy-ready code
/* CSS */
color: #178d21;
background-color: #178d21;
/* Tailwind (arbitrary) */
class="text-[#178d21] bg-[#178d21]"
/* SCSS */
$brand: #178d21;
/* SwiftUI */
Color(red: 0.090, green: 0.553, blue: 0.129)
/* Android */
Color.parseColor("#178d21")Accessibility — WCAG contrast
Aa
#178d21 on white: 4.31:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#178d21 on black: 4.87:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red9.0%
Green55.3%
Blue12.9%
CMYK percentages
Cyan83.7%
Magenta0.0%
Yellow76.6%
Key (black)44.7%
Color previews
#178d21 text on a black background
contrast 4.87:1
Card sample
#178d21 text on a white background
contrast 4.31:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #178d21;
Background color
Panel with #178d21 background
background-color: #178d21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #178d21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(23, 141, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(23, 141, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #178d21; background: linear-gradient(135deg, #178d21, #178D70);