#eff521
a balanced, electric yellow · cool · closest name: yellow
RGB
239, 245, 33
HSL
62°, 91%, 55%
CMYK
2, 0, 87, 4
Luminance
0.8377
Every format
| HEX | #eff521 |
| RGB | rgb(239, 245, 33) |
| HSL | hsl(62, 91%, 55%) |
| CMYK | cmyk(2%, 0%, 87%, 4%) |
| LAB | lab(93.3 -23.0 87.6) |
| LCH | lch(93.3 90.6 104.7) |
| OKLCH | oklch(0.935 0.201 111.5) |
Copy-ready code
/* CSS */
color: #eff521;
background-color: #eff521;
/* Tailwind (arbitrary) */
class="text-[#eff521] bg-[#eff521]"
/* SCSS */
$brand: #eff521;
/* SwiftUI */
Color(red: 0.937, green: 0.961, blue: 0.129)
/* Android */
Color.parseColor("#eff521")Accessibility — WCAG contrast
Aa
#eff521 on white: 1.18:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#eff521 on black: 17.75:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green96.1%
Blue12.9%
CMYK percentages
Cyan2.4%
Magenta0.0%
Yellow86.5%
Key (black)3.9%
Color previews
#eff521 text on a black background
contrast 17.75:1
Card sample
#eff521 text on a white background
contrast 1.18:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #eff521;
Background color
Panel with #eff521 background
background-color: #eff521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #eff521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 245, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 245, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #eff521; background: linear-gradient(135deg, #eff521, #62F521);