#666f21
a dark, vivid yellow · cool · closest name: olive
RGB
102, 111, 33
HSL
67°, 54%, 28%
CMYK
8, 0, 70, 57
Luminance
0.1430
Every format
| HEX | #666f21 |
| RGB | rgb(102, 111, 33) |
| HSL | hsl(67, 54%, 28%) |
| CMYK | cmyk(8%, 0%, 70%, 57%) |
| LAB | lab(44.7 -14.6 40.4) |
| LCH | lch(44.7 43.0 109.9) |
| OKLCH | oklch(0.518 0.101 115.7) |
Copy-ready code
/* CSS */
color: #666f21;
background-color: #666f21;
/* Tailwind (arbitrary) */
class="text-[#666f21] bg-[#666f21]"
/* SCSS */
$brand: #666f21;
/* SwiftUI */
Color(red: 0.400, green: 0.435, blue: 0.129)
/* Android */
Color.parseColor("#666f21")Accessibility — WCAG contrast
Aa
#666f21 on white: 5.44:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#666f21 on black: 3.86:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green43.5%
Blue12.9%
CMYK percentages
Cyan8.1%
Magenta0.0%
Yellow70.3%
Key (black)56.5%
Color previews
#666f21 text on a black background
contrast 3.86:1
Card sample
#666f21 text on a white background
contrast 5.44:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666f21;
Background color
Panel with #666f21 background
background-color: #666f21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666f21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 111, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 111, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666f21; background: linear-gradient(135deg, #666f21, #326F21);