#eff40c
a balanced, electric yellow · cool · closest name: yellow
RGB
239, 244, 12
HSL
61°, 91%, 50%
CMYK
2, 0, 95, 4
Luminance
0.8308
Every format
| HEX | #eff40c |
| RGB | rgb(239, 244, 12) |
| HSL | hsl(61, 91%, 50%) |
| CMYK | cmyk(2%, 0%, 95%, 4%) |
| LAB | lab(93.0 -22.8 90.0) |
| LCH | lch(93.0 92.9 104.2) |
| OKLCH | oklch(0.932 0.204 111.3) |
Copy-ready code
/* CSS */
color: #eff40c;
background-color: #eff40c;
/* Tailwind (arbitrary) */
class="text-[#eff40c] bg-[#eff40c]"
/* SCSS */
$brand: #eff40c;
/* SwiftUI */
Color(red: 0.937, green: 0.957, blue: 0.047)
/* Android */
Color.parseColor("#eff40c")Accessibility — WCAG contrast
Aa
#eff40c on white: 1.19:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#eff40c on black: 17.62:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green95.7%
Blue4.7%
CMYK percentages
Cyan2.0%
Magenta0.0%
Yellow95.1%
Key (black)4.3%
Color previews
#eff40c text on a black background
contrast 17.62:1
Card sample
#eff40c text on a white background
contrast 1.19:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #eff40c;
Background color
Panel with #eff40c background
background-color: #eff40c;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #eff40c;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 244, 12, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 244, 12, 0.45);
Border & gradient
Gradient panel
border: 3px solid #eff40c; background: linear-gradient(135deg, #eff40c, #54F40C);