#efff47
a balanced, electric yellow · cool · closest name: yellow
RGB
239, 255, 71
HSL
65°, 100%, 64%
CMYK
6, 0, 72, 0
Luminance
0.9033
Every format
| HEX | #efff47 |
| RGB | rgb(239, 255, 71) |
| HSL | hsl(65, 100%, 64%) |
| CMYK | cmyk(6%, 0%, 72%, 0%) |
| LAB | lab(96.1 -26.5 80.5) |
| LCH | lch(96.1 84.7 108.2) |
| OKLCH | oklch(0.958 0.195 114.5) |
Copy-ready code
/* CSS */
color: #efff47;
background-color: #efff47;
/* Tailwind (arbitrary) */
class="text-[#efff47] bg-[#efff47]"
/* SCSS */
$brand: #efff47;
/* SwiftUI */
Color(red: 0.937, green: 1.000, blue: 0.278)
/* Android */
Color.parseColor("#efff47")Accessibility — WCAG contrast
Aa
#efff47 on white: 1.10:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#efff47 on black: 19.07:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green100.0%
Blue27.8%
CMYK percentages
Cyan6.3%
Magenta0.0%
Yellow72.2%
Key (black)0.0%
Color previews
#efff47 text on a black background
contrast 19.07:1
Card sample
#efff47 text on a white background
contrast 1.10:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #efff47;
Background color
Panel with #efff47 background
background-color: #efff47;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #efff47;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 255, 71, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 255, 71, 0.45);
Border & gradient
Gradient panel
border: 3px solid #efff47; background: linear-gradient(135deg, #efff47, #74FF47);