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#ceff3f

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

RGB
206, 255, 63
HSL
75°, 100%, 62%
CMYK
19, 0, 75, 0
Luminance
0.8500

Every format

HEX#ceff3f
RGBrgb(206, 255, 63)
HSLhsl(75, 100%, 62%)
CMYKcmyk(19%, 0%, 75%, 0%)
LABlab(93.9 -39.7 80.0)
LCHlch(93.9 89.3 116.4)
OKLCHoklch(0.934 0.211 123.4)

Copy-ready code

/* CSS */
color: #ceff3f;
background-color: #ceff3f;
/* Tailwind (arbitrary) */
class="text-[#ceff3f] bg-[#ceff3f]"
/* SCSS */
$brand: #ceff3f;
/* SwiftUI */
Color(red: 0.808, green: 1.000, blue: 0.247)
/* Android */
Color.parseColor("#ceff3f")

Accessibility — WCAG contrast

Aa
#ceff3f on white: 1.17:1
AA ✗ fail · AA-large · AAA
Aa
#ceff3f on black: 18.00:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red80.8%
Green100.0%
Blue24.7%

CMYK percentages

Cyan19.2%
Magenta0.0%
Yellow75.3%
Key (black)0.0%

Color previews

#ceff3f text on a black background

contrast 18.00:1

Card sample

#ceff3f text on a white background

contrast 1.17:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #ceff3f;
Background color
Panel with #ceff3f background
background-color: #ceff3f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #ceff3f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(206, 255, 63, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(206, 255, 63, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ceff3f;
background: linear-gradient(135deg, #ceff3f, #4EFF3F);

Monochromatic scale

Palettes built from #ceff3f

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #ceff3f in the Color Lab