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#3fffdb

a balanced, electric cyan · cool · closest name: aquamarine

RGB
63, 255, 219
HSL
169°, 100%, 62%
CMYK
75, 0, 14, 0
Luminance
0.7769

Every format

HEX#3fffdb
RGBrgb(63, 255, 219)
HSLhsl(169, 100%, 62%)
CMYKcmyk(75%, 0%, 14%, 0%)
LABlab(90.6 -54.4 3.9)
LCHlch(90.6 54.6 175.9)
OKLCHoklch(0.900 0.155 176.5)

Copy-ready code

/* CSS */
color: #3fffdb;
background-color: #3fffdb;
/* Tailwind (arbitrary) */
class="text-[#3fffdb] bg-[#3fffdb]"
/* SCSS */
$brand: #3fffdb;
/* SwiftUI */
Color(red: 0.247, green: 1.000, blue: 0.859)
/* Android */
Color.parseColor("#3fffdb")

Accessibility — WCAG contrast

Aa
#3fffdb on white: 1.27:1
AA ✗ fail · AA-large · AAA
Aa
#3fffdb on black: 16.54:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red24.7%
Green100.0%
Blue85.9%

CMYK percentages

Cyan75.3%
Magenta0.0%
Yellow14.1%
Key (black)0.0%

Color previews

#3fffdb text on a black background

contrast 16.54:1

Card sample

#3fffdb text on a white background

contrast 1.27:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #3fffdb;
Background color
Panel with #3fffdb background
background-color: #3fffdb;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #3fffdb;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(63, 255, 219, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 255, 219, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3fffdb;
background: linear-gradient(135deg, #3fffdb, #3FA3FF);

Monochromatic scale

Palettes built from #3fffdb

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #3fffdb in the Color Lab