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#f7ff21

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

RGB
247, 255, 33
HSL
62°, 100%, 57%
CMYK
3, 0, 87, 0
Luminance
0.9140

Every format

HEX#f7ff21
RGBrgb(247, 255, 33)
HSLhsl(62, 100%, 57%)
CMYKcmyk(3%, 0%, 87%, 0%)
LABlab(96.6 -24.4 90.4)
LCHlch(96.6 93.7 105.1)
OKLCHoklch(0.962 0.208 112.1)

Copy-ready code

/* CSS */
color: #f7ff21;
background-color: #f7ff21;
/* Tailwind (arbitrary) */
class="text-[#f7ff21] bg-[#f7ff21]"
/* SCSS */
$brand: #f7ff21;
/* SwiftUI */
Color(red: 0.969, green: 1.000, blue: 0.129)
/* Android */
Color.parseColor("#f7ff21")

Accessibility — WCAG contrast

Aa
#f7ff21 on white: 1.09:1
AA ✗ fail · AA-large · AAA
Aa
#f7ff21 on black: 19.28:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red96.9%
Green100.0%
Blue12.9%

CMYK percentages

Cyan3.1%
Magenta0.0%
Yellow87.1%
Key (black)0.0%

Color previews

#f7ff21 text on a black background

contrast 19.28:1

Card sample

#f7ff21 text on a white background

contrast 1.09:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #f7ff21;
Background color
Panel with #f7ff21 background
background-color: #f7ff21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #f7ff21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(247, 255, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(247, 255, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f7ff21;
background: linear-gradient(135deg, #f7ff21, #63FF21);

Monochromatic scale

Palettes built from #f7ff21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #f7ff21 in the Color Lab