#f4ff03
a balanced, electric yellow · cool · closest name: yellow
RGB
244, 255, 3
HSL
63°, 100%, 51%
CMYK
4, 0, 99, 0
Luminance
0.9076
Every format
| HEX | #f4ff03 |
| RGB | rgb(244, 255, 3) |
| HSL | hsl(63, 100%, 51%) |
| CMYK | cmyk(4%, 0%, 99%, 0%) |
| LAB | lab(96.3 -26.0 93.3) |
| LCH | lch(96.3 96.8 105.6) |
| OKLCH | oklch(0.959 0.213 112.9) |
Copy-ready code
/* CSS */
color: #f4ff03;
background-color: #f4ff03;
/* Tailwind (arbitrary) */
class="text-[#f4ff03] bg-[#f4ff03]"
/* SCSS */
$brand: #f4ff03;
/* SwiftUI */
Color(red: 0.957, green: 1.000, blue: 0.012)
/* Android */
Color.parseColor("#f4ff03")Accessibility — WCAG contrast
Aa
#f4ff03 on white: 1.10:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#f4ff03 on black: 19.15:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red95.7%
Green100.0%
Blue1.2%
CMYK percentages
Cyan4.3%
Magenta0.0%
Yellow98.8%
Key (black)0.0%
Color previews
#f4ff03 text on a black background
contrast 19.15:1
Card sample
#f4ff03 text on a white background
contrast 1.10:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #f4ff03;
Background color
Panel with #f4ff03 background
background-color: #f4ff03;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #f4ff03;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(244, 255, 3, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(244, 255, 3, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f4ff03; background: linear-gradient(135deg, #f4ff03, #4CFF03);