#666e00
a deep, electric yellow · cool · closest name: olive
RGB
102, 110, 0
HSL
64°, 100%, 22%
CMYK
7, 0, 100, 57
Luminance
0.1398
Every format
| HEX | #666e00 |
| RGB | rgb(102, 110, 0) |
| HSL | hsl(64, 100%, 22%) |
| CMYK | cmyk(7%, 0%, 100%, 57%) |
| LAB | lab(44.2 -15.4 50.0) |
| LCH | lch(44.2 52.4 107.1) |
| OKLCH | oklch(0.514 0.116 114.7) |
Copy-ready code
/* CSS */
color: #666e00;
background-color: #666e00;
/* Tailwind (arbitrary) */
class="text-[#666e00] bg-[#666e00]"
/* SCSS */
$brand: #666e00;
/* SwiftUI */
Color(red: 0.400, green: 0.431, blue: 0.000)
/* Android */
Color.parseColor("#666e00")Accessibility — WCAG contrast
Aa
#666e00 on white: 5.53:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#666e00 on black: 3.80:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green43.1%
Blue0.0%
CMYK percentages
Cyan7.3%
Magenta0.0%
Yellow100.0%
Key (black)56.9%
Color previews
#666e00 text on a black background
contrast 3.80:1
Card sample
#666e00 text on a white background
contrast 5.53:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666e00;
Background color
Panel with #666e00 background
background-color: #666e00;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666e00;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 110, 0, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 110, 0, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666e00; background: linear-gradient(135deg, #666e00, #1D6E00);