#ecf521
a balanced, electric yellow · cool · closest name: yellow
RGB
236, 245, 33
HSL
63°, 91%, 55%
CMYK
4, 0, 87, 4
Luminance
0.8325
Every format
| HEX | #ecf521 |
| RGB | rgb(236, 245, 33) |
| HSL | hsl(63, 91%, 55%) |
| CMYK | cmyk(4%, 0%, 87%, 4%) |
| LAB | lab(93.1 -24.2 87.3) |
| LCH | lch(93.1 90.6 105.5) |
| OKLCH | oklch(0.932 0.202 112.5) |
Copy-ready code
/* CSS */
color: #ecf521;
background-color: #ecf521;
/* Tailwind (arbitrary) */
class="text-[#ecf521] bg-[#ecf521]"
/* SCSS */
$brand: #ecf521;
/* SwiftUI */
Color(red: 0.925, green: 0.961, blue: 0.129)
/* Android */
Color.parseColor("#ecf521")Accessibility — WCAG contrast
Aa
#ecf521 on white: 1.19:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#ecf521 on black: 17.65:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red92.5%
Green96.1%
Blue12.9%
CMYK percentages
Cyan3.7%
Magenta0.0%
Yellow86.5%
Key (black)3.9%
Color previews
#ecf521 text on a black background
contrast 17.65:1
Card sample
#ecf521 text on a white background
contrast 1.19:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #ecf521;
Background color
Panel with #ecf521 background
background-color: #ecf521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #ecf521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(236, 245, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(236, 245, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ecf521; background: linear-gradient(135deg, #ecf521, #5FF521);