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#f3ff2f

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

RGB
243, 255, 47
HSL
64°, 100%, 59%
CMYK
5, 0, 82, 0
Luminance
0.9078

Every format

HEX#f3ff2f
RGBrgb(243, 255, 47)
HSLhsl(64, 100%, 59%)
CMYKcmyk(5%, 0%, 82%, 0%)
LABlab(96.3 -25.8 87.3)
LCHlch(96.3 91.1 106.4)
OKLCHoklch(0.960 0.205 113.2)

Copy-ready code

/* CSS */
color: #f3ff2f;
background-color: #f3ff2f;
/* Tailwind (arbitrary) */
class="text-[#f3ff2f] bg-[#f3ff2f]"
/* SCSS */
$brand: #f3ff2f;
/* SwiftUI */
Color(red: 0.953, green: 1.000, blue: 0.184)
/* Android */
Color.parseColor("#f3ff2f")

Accessibility — WCAG contrast

Aa
#f3ff2f on white: 1.10:1
AA ✗ fail · AA-large · AAA
Aa
#f3ff2f on black: 19.16:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red95.3%
Green100.0%
Blue18.4%

CMYK percentages

Cyan4.7%
Magenta0.0%
Yellow81.6%
Key (black)0.0%

Color previews

#f3ff2f text on a black background

contrast 19.16:1

Card sample

#f3ff2f text on a white background

contrast 1.10:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #f3ff2f;
Background color
Panel with #f3ff2f background
background-color: #f3ff2f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #f3ff2f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(243, 255, 47, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(243, 255, 47, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f3ff2f;
background: linear-gradient(135deg, #f3ff2f, #68FF2F);

Monochromatic scale

Palettes built from #f3ff2f

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #f3ff2f in the Color Lab