#fff31f
a balanced, electric yellow · cool · closest name: yellow
RGB
255, 243, 31
HSL
57°, 100%, 56%
CMYK
0, 5, 88, 0
Luminance
0.8546
Every format
| HEX | #fff31f |
| RGB | rgb(255, 243, 31) |
| HSL | hsl(57, 100%, 56%) |
| CMYK | cmyk(0%, 5%, 88%, 0%) |
| LAB | lab(94.1 -15.5 89.0) |
| LCH | lch(94.1 90.4 99.9) |
| OKLCH | oklch(0.944 0.197 105.9) |
Copy-ready code
/* CSS */
color: #fff31f;
background-color: #fff31f;
/* Tailwind (arbitrary) */
class="text-[#fff31f] bg-[#fff31f]"
/* SCSS */
$brand: #fff31f;
/* SwiftUI */
Color(red: 1.000, green: 0.953, blue: 0.122)
/* Android */
Color.parseColor("#fff31f")Accessibility — WCAG contrast
Aa
#fff31f on white: 1.16:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#fff31f on black: 18.09:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red100.0%
Green95.3%
Blue12.2%
CMYK percentages
Cyan0.0%
Magenta4.7%
Yellow87.8%
Key (black)0.0%
Color previews
#fff31f text on a black background
contrast 18.09:1
Card sample
#fff31f text on a white background
contrast 1.16:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #fff31f;
Background color
Panel with #fff31f background
background-color: #fff31f;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #fff31f;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(255, 243, 31, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(255, 243, 31, 0.45);
Border & gradient
Gradient panel
border: 3px solid #fff31f; background: linear-gradient(135deg, #fff31f, #76FF1F);