#664400
a deep, electric yellow · warm · closest name: sienna
RGB
102, 68, 0
HSL
40°, 100%, 20%
CMYK
0, 33, 100, 60
Luminance
0.0696
Every format
| HEX | #664400 |
| RGB | rgb(102, 68, 0) |
| HSL | hsl(40, 100%, 20%) |
| CMYK | cmyk(0%, 33%, 100%, 60%) |
| LAB | lab(31.7 9.2 41.1) |
| LCH | lch(31.7 42.2 77.3) |
| OKLCH | oklch(0.415 0.087 76.5) |
Copy-ready code
/* CSS */
color: #664400;
background-color: #664400;
/* Tailwind (arbitrary) */
class="text-[#664400] bg-[#664400]"
/* SCSS */
$brand: #664400;
/* SwiftUI */
Color(red: 0.400, green: 0.267, blue: 0.000)
/* Android */
Color.parseColor("#664400")Accessibility — WCAG contrast
Aa
#664400 on white: 8.78:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#664400 on black: 2.39:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green26.7%
Blue0.0%
CMYK percentages
Cyan0.0%
Magenta33.3%
Yellow100.0%
Key (black)60.0%
Color previews
#664400 text on a black background
contrast 2.39:1
Card sample
#664400 text on a white background
contrast 8.78:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #664400;
Background color
Panel with #664400 background
background-color: #664400;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #664400;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 68, 0, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 68, 0, 0.45);
Border & gradient
Gradient panel
border: 3px solid #664400; background: linear-gradient(135deg, #664400, #446600);