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#3affdf

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

RGB
58, 255, 223
HSL
170°, 100%, 61%
CMYK
77, 0, 13, 0
Luminance
0.7775

Every format

HEX#3affdf
RGBrgb(58, 255, 223)
HSLhsl(170, 100%, 61%)
CMYKcmyk(77%, 0%, 13%, 0%)
LABlab(90.7 -53.9 1.8)
LCHlch(90.7 54.0 178.0)
OKLCHoklch(0.900 0.155 178.5)

Copy-ready code

/* CSS */
color: #3affdf;
background-color: #3affdf;
/* Tailwind (arbitrary) */
class="text-[#3affdf] bg-[#3affdf]"
/* SCSS */
$brand: #3affdf;
/* SwiftUI */
Color(red: 0.227, green: 1.000, blue: 0.875)
/* Android */
Color.parseColor("#3affdf")

Accessibility — WCAG contrast

Aa
#3affdf on white: 1.27:1
AA ✗ fail · AA-large · AAA
Aa
#3affdf on black: 16.55:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red22.7%
Green100.0%
Blue87.5%

CMYK percentages

Cyan77.3%
Magenta0.0%
Yellow12.5%
Key (black)0.0%

Color previews

#3affdf text on a black background

contrast 16.55:1

Card sample

#3affdf text on a white background

contrast 1.27:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(58, 255, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(58, 255, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3affdf;
background: linear-gradient(135deg, #3affdf, #3A9CFF);

Monochromatic scale

Palettes built from #3affdf

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #3affdf in the Color Lab