#eff821
a balanced, electric yellow · cool · closest name: yellow
RGB
239, 248, 33
HSL
63°, 94%, 55%
CMYK
4, 0, 87, 3
Luminance
0.8560
Every format
| HEX | #eff821 |
| RGB | rgb(239, 248, 33) |
| HSL | hsl(63, 94%, 55%) |
| CMYK | cmyk(4%, 0%, 87%, 3%) |
| LAB | lab(94.1 -24.4 88.2) |
| LCH | lch(94.1 91.5 105.5) |
| OKLCH | oklch(0.941 0.204 112.4) |
Copy-ready code
/* CSS */
color: #eff821;
background-color: #eff821;
/* Tailwind (arbitrary) */
class="text-[#eff821] bg-[#eff821]"
/* SCSS */
$brand: #eff821;
/* SwiftUI */
Color(red: 0.937, green: 0.973, blue: 0.129)
/* Android */
Color.parseColor("#eff821")Accessibility — WCAG contrast
Aa
#eff821 on white: 1.16:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#eff821 on black: 18.12:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green97.3%
Blue12.9%
CMYK percentages
Cyan3.6%
Magenta0.0%
Yellow86.7%
Key (black)2.7%
Color previews
#eff821 text on a black background
contrast 18.12:1
Card sample
#eff821 text on a white background
contrast 1.16:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #eff821;
Background color
Panel with #eff821 background
background-color: #eff821;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #eff821;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 248, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 248, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #eff821; background: linear-gradient(135deg, #eff821, #60F821);