#f5ff21
a balanced, electric yellow · cool · closest name: yellow
RGB
245, 255, 33
HSL
63°, 100%, 57%
CMYK
4, 0, 87, 0
Luminance
0.9104
Every format
| HEX | #f5ff21 |
| RGB | rgb(245, 255, 33) |
| HSL | hsl(63, 100%, 57%) |
| CMYK | cmyk(4%, 0%, 87%, 0%) |
| LAB | lab(96.4 -25.3 90.3) |
| LCH | lch(96.4 93.7 105.6) |
| OKLCH | oklch(0.961 0.209 112.6) |
Copy-ready code
/* CSS */
color: #f5ff21;
background-color: #f5ff21;
/* Tailwind (arbitrary) */
class="text-[#f5ff21] bg-[#f5ff21]"
/* SCSS */
$brand: #f5ff21;
/* SwiftUI */
Color(red: 0.961, green: 1.000, blue: 0.129)
/* Android */
Color.parseColor("#f5ff21")Accessibility — WCAG contrast
Aa
#f5ff21 on white: 1.09:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#f5ff21 on black: 19.21:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red96.1%
Green100.0%
Blue12.9%
CMYK percentages
Cyan3.9%
Magenta0.0%
Yellow87.1%
Key (black)0.0%
Color previews
#f5ff21 text on a black background
contrast 19.21:1
Card sample
#f5ff21 text on a white background
contrast 1.09:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #f5ff21;
Background color
Panel with #f5ff21 background
background-color: #f5ff21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #f5ff21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(245, 255, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(245, 255, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f5ff21; background: linear-gradient(135deg, #f5ff21, #61FF21);