#646e21
a dark, vivid yellow · cool · closest name: olive
RGB
100, 110, 33
HSL
68°, 54%, 28%
CMYK
9, 0, 70, 57
Luminance
0.1397
Every format
| HEX | #646e21 |
| RGB | rgb(100, 110, 33) |
| HSL | hsl(68, 54%, 28%) |
| CMYK | cmyk(9%, 0%, 70%, 57%) |
| LAB | lab(44.2 -15.0 39.9) |
| LCH | lch(44.2 42.6 110.6) |
| OKLCH | oklch(0.514 0.100 116.4) |
Copy-ready code
/* CSS */
color: #646e21;
background-color: #646e21;
/* Tailwind (arbitrary) */
class="text-[#646e21] bg-[#646e21]"
/* SCSS */
$brand: #646e21;
/* SwiftUI */
Color(red: 0.392, green: 0.431, blue: 0.129)
/* Android */
Color.parseColor("#646e21")Accessibility — WCAG contrast
Aa
#646e21 on white: 5.53:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#646e21 on black: 3.79:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red39.2%
Green43.1%
Blue12.9%
CMYK percentages
Cyan9.1%
Magenta0.0%
Yellow70.0%
Key (black)56.9%
Color previews
#646e21 text on a black background
contrast 3.79:1
Card sample
#646e21 text on a white background
contrast 5.53:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #646e21;
Background color
Panel with #646e21 background
background-color: #646e21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #646e21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(100, 110, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(100, 110, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #646e21; background: linear-gradient(135deg, #646e21, #316E21);