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#f3fa21

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

RGB
243, 250, 33
HSL
62°, 96%, 56%
CMYK
3, 0, 87, 2
Luminance
0.8754

Every format

HEX#f3fa21
RGBrgb(243, 250, 33)
HSLhsl(62, 96%, 56%)
CMYKcmyk(3%, 0%, 87%, 2%)
LABlab(95.0 -23.7 89.0)
LCHlch(95.0 92.1 104.9)
OKLCHoklch(0.949 0.204 111.8)

Copy-ready code

/* CSS */
color: #f3fa21;
background-color: #f3fa21;
/* Tailwind (arbitrary) */
class="text-[#f3fa21] bg-[#f3fa21]"
/* SCSS */
$brand: #f3fa21;
/* SwiftUI */
Color(red: 0.953, green: 0.980, blue: 0.129)
/* Android */
Color.parseColor("#f3fa21")

Accessibility — WCAG contrast

Aa
#f3fa21 on white: 1.13:1
AA ✗ fail · AA-large · AAA
Aa
#f3fa21 on black: 18.51:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red95.3%
Green98.0%
Blue12.9%

CMYK percentages

Cyan2.8%
Magenta0.0%
Yellow86.8%
Key (black)2.0%

Color previews

#f3fa21 text on a black background

contrast 18.51:1

Card sample

#f3fa21 text on a white background

contrast 1.13:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #f3fa21;
Background color
Panel with #f3fa21 background
background-color: #f3fa21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #f3fa21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(243, 250, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(243, 250, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f3fa21;
background: linear-gradient(135deg, #f3fa21, #62FA21);

Monochromatic scale

Palettes built from #f3fa21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #f3fa21 in the Color Lab