#effd21
a balanced, electric yellow · cool · closest name: yellow
RGB
239, 253, 33
HSL
64°, 98%, 56%
CMYK
6, 0, 87, 1
Luminance
0.8871
Every format
| HEX | #effd21 |
| RGB | rgb(239, 253, 33) |
| HSL | hsl(64, 98%, 56%) |
| CMYK | cmyk(6%, 0%, 87%, 1%) |
| LAB | lab(95.5 -26.8 89.3) |
| LCH | lch(95.5 93.2 106.7) |
| OKLCH | oklch(0.952 0.208 113.8) |
Copy-ready code
/* CSS */
color: #effd21;
background-color: #effd21;
/* Tailwind (arbitrary) */
class="text-[#effd21] bg-[#effd21]"
/* SCSS */
$brand: #effd21;
/* SwiftUI */
Color(red: 0.937, green: 0.992, blue: 0.129)
/* Android */
Color.parseColor("#effd21")Accessibility — WCAG contrast
Aa
#effd21 on white: 1.12:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#effd21 on black: 18.74:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green99.2%
Blue12.9%
CMYK percentages
Cyan5.5%
Magenta0.0%
Yellow87.0%
Key (black)0.8%
Color previews
#effd21 text on a black background
contrast 18.74:1
Card sample
#effd21 text on a white background
contrast 1.12:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #effd21;
Background color
Panel with #effd21 background
background-color: #effd21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #effd21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 253, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 253, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #effd21; background: linear-gradient(135deg, #effd21, #5CFD21);