#666c01
a deep, electric yellow · cool · closest name: olive
RGB
102, 108, 1
HSL
63°, 98%, 21%
CMYK
6, 0, 99, 58
Luminance
0.1355
Every format
| HEX | #666c01 |
| RGB | rgb(102, 108, 1) |
| HSL | hsl(63, 98%, 21%) |
| CMYK | cmyk(6%, 0%, 99%, 58%) |
| LAB | lab(43.6 -14.3 49.3) |
| LCH | lch(43.6 51.4 106.2) |
| OKLCH | oklch(0.509 0.114 113.6) |
Copy-ready code
/* CSS */
color: #666c01;
background-color: #666c01;
/* Tailwind (arbitrary) */
class="text-[#666c01] bg-[#666c01]"
/* SCSS */
$brand: #666c01;
/* SwiftUI */
Color(red: 0.400, green: 0.424, blue: 0.004)
/* Android */
Color.parseColor("#666c01")Accessibility — WCAG contrast
Aa
#666c01 on white: 5.66:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#666c01 on black: 3.71:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.4%
Blue0.4%
CMYK percentages
Cyan5.6%
Magenta0.0%
Yellow99.1%
Key (black)57.6%
Color previews
#666c01 text on a black background
contrast 3.71:1
Card sample
#666c01 text on a white background
contrast 5.66:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666c01;
Background color
Panel with #666c01 background
background-color: #666c01;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666c01;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 108, 1, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 108, 1, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666c01; background: linear-gradient(135deg, #666c01, #1F6C01);