#efcf21
a balanced, electric yellow · cool · closest name: gold
RGB
239, 207, 33
HSL
51°, 87%, 53%
CMYK
0, 13, 86, 6
Luminance
0.6309
Every format
| HEX | #efcf21 |
| RGB | rgb(239, 207, 33) |
| HSL | hsl(51, 87%, 53%) |
| CMYK | cmyk(0%, 13%, 86%, 6%) |
| LAB | lab(83.5 -4.3 79.7) |
| LCH | lch(83.5 79.8 93.1) |
| OKLCH | oklch(0.856 0.171 97.3) |
Copy-ready code
/* CSS */
color: #efcf21;
background-color: #efcf21;
/* Tailwind (arbitrary) */
class="text-[#efcf21] bg-[#efcf21]"
/* SCSS */
$brand: #efcf21;
/* SwiftUI */
Color(red: 0.937, green: 0.812, blue: 0.129)
/* Android */
Color.parseColor("#efcf21")Accessibility — WCAG contrast
Aa
#efcf21 on white: 1.54:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#efcf21 on black: 13.62:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green81.2%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta13.4%
Yellow86.2%
Key (black)6.3%
Color previews
#efcf21 text on a black background
contrast 13.62:1
Card sample
#efcf21 text on a white background
contrast 1.54:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #efcf21;
Background color
Panel with #efcf21 background
background-color: #efcf21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #efcf21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 207, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 207, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #efcf21; background: linear-gradient(135deg, #efcf21, #86EF21);