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#f1ff21

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

RGB
241, 255, 33
HSL
64°, 100%, 57%
CMYK
6, 0, 87, 0
Luminance
0.9033

Every format

HEX#f1ff21
RGBrgb(241, 255, 33)
HSLhsl(64, 100%, 57%)
CMYKcmyk(6%, 0%, 87%, 0%)
LABlab(96.1 -26.9 89.9)
LCHlch(96.1 93.8 106.7)
OKLCHoklch(0.958 0.210 113.8)

Copy-ready code

/* CSS */
color: #f1ff21;
background-color: #f1ff21;
/* Tailwind (arbitrary) */
class="text-[#f1ff21] bg-[#f1ff21]"
/* SCSS */
$brand: #f1ff21;
/* SwiftUI */
Color(red: 0.945, green: 1.000, blue: 0.129)
/* Android */
Color.parseColor("#f1ff21")

Accessibility — WCAG contrast

Aa
#f1ff21 on white: 1.10:1
AA ✗ fail · AA-large · AAA
Aa
#f1ff21 on black: 19.07:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red94.5%
Green100.0%
Blue12.9%

CMYK percentages

Cyan5.5%
Magenta0.0%
Yellow87.1%
Key (black)0.0%

Color previews

#f1ff21 text on a black background

contrast 19.07:1

Card sample

#f1ff21 text on a white background

contrast 1.10:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #f1ff21;
Background color
Panel with #f1ff21 background
background-color: #f1ff21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #f1ff21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(241, 255, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(241, 255, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f1ff21;
background: linear-gradient(135deg, #f1ff21, #5DFF21);

Monochromatic scale

Palettes built from #f1ff21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #f1ff21 in the Color Lab