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#f9ff39

a balanced, electric yellow · cool · closest name: yellow

RGB
249, 255, 57
HSL
62°, 100%, 61%
CMYK
2, 0, 78, 0
Luminance
0.9196

Every format

HEX#f9ff39
RGBrgb(249, 255, 57)
HSLhsl(62, 100%, 61%)
CMYKcmyk(2%, 0%, 78%, 0%)
LABlab(96.8 -23.0 85.5)
LCHlch(96.8 88.5 105.1)
OKLCHoklch(0.965 0.199 111.4)

Copy-ready code

/* CSS */
color: #f9ff39;
background-color: #f9ff39;
/* Tailwind (arbitrary) */
class="text-[#f9ff39] bg-[#f9ff39]"
/* SCSS */
$brand: #f9ff39;
/* SwiftUI */
Color(red: 0.976, green: 1.000, blue: 0.224)
/* Android */
Color.parseColor("#f9ff39")

Accessibility — WCAG contrast

Aa
#f9ff39 on white: 1.08:1
AA ✗ fail · AA-large · AAA
Aa
#f9ff39 on black: 19.39:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red97.6%
Green100.0%
Blue22.4%

CMYK percentages

Cyan2.4%
Magenta0.0%
Yellow77.6%
Key (black)0.0%

Color previews

#f9ff39 text on a black background

contrast 19.39:1

Card sample

#f9ff39 text on a white background

contrast 1.08:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #f9ff39;
Background color
Panel with #f9ff39 background
background-color: #f9ff39;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #f9ff39;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(249, 255, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(249, 255, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f9ff39;
background: linear-gradient(135deg, #f9ff39, #75FF39);

Monochromatic scale

Palettes built from #f9ff39

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #f9ff39 in the Color Lab