#effe21
a balanced, electric yellow · cool · closest name: yellow
RGB
239, 254, 33
HSL
64°, 99%, 56%
CMYK
6, 0, 87, 0
Luminance
0.8934
Every format
| HEX | #effe21 |
| RGB | rgb(239, 254, 33) |
| HSL | hsl(64, 99%, 56%) |
| CMYK | cmyk(6%, 0%, 87%, 0%) |
| LAB | lab(95.7 -27.2 89.5) |
| LCH | lch(95.7 93.5 106.9) |
| OKLCH | oklch(0.954 0.209 114.1) |
Copy-ready code
/* CSS */
color: #effe21;
background-color: #effe21;
/* Tailwind (arbitrary) */
class="text-[#effe21] bg-[#effe21]"
/* SCSS */
$brand: #effe21;
/* SwiftUI */
Color(red: 0.937, green: 0.996, blue: 0.129)
/* Android */
Color.parseColor("#effe21")Accessibility — WCAG contrast
Aa
#effe21 on white: 1.11:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#effe21 on black: 18.87:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green99.6%
Blue12.9%
CMYK percentages
Cyan5.9%
Magenta0.0%
Yellow87.0%
Key (black)0.4%
Color previews
#effe21 text on a black background
contrast 18.87:1
Card sample
#effe21 text on a white background
contrast 1.11:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #effe21;
Background color
Panel with #effe21 background
background-color: #effe21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #effe21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 254, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 254, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #effe21; background: linear-gradient(135deg, #effe21, #5CFE21);