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#40dfdf

a balanced, vivid cyan · cool · closest name: turquoise

RGB
64, 223, 223
HSL
180°, 71%, 56%
CMYK
71, 0, 0, 13
Luminance
0.5919

Every format

HEX#40dfdf
RGBrgb(64, 223, 223)
HSLhsl(180, 71%, 56%)
CMYKcmyk(71%, 0%, 0%, 13%)
LABlab(81.4 -39.5 -11.8)
LCHlch(81.4 41.3 196.6)
OKLCHoklch(0.825 0.127 195.0)

Copy-ready code

/* CSS */
color: #40dfdf;
background-color: #40dfdf;
/* Tailwind (arbitrary) */
class="text-[#40dfdf] bg-[#40dfdf]"
/* SCSS */
$brand: #40dfdf;
/* SwiftUI */
Color(red: 0.251, green: 0.875, blue: 0.875)
/* Android */
Color.parseColor("#40dfdf")

Accessibility — WCAG contrast

Aa
#40dfdf on white: 1.64:1
AA ✗ fail · AA-large · AAA
Aa
#40dfdf on black: 12.84:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red25.1%
Green87.5%
Blue87.5%

CMYK percentages

Cyan71.3%
Magenta0.0%
Yellow0.0%
Key (black)12.5%

Color previews

#40dfdf text on a black background

contrast 12.84:1

Card sample

#40dfdf text on a white background

contrast 1.64:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #40dfdf;
Background color
Panel with #40dfdf background
background-color: #40dfdf;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #40dfdf;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(64, 223, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 223, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40dfdf;
background: linear-gradient(135deg, #40dfdf, #4075DF);

Monochromatic scale

Palettes built from #40dfdf

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #40dfdf in the Color Lab