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#40cdda

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

RGB
64, 205, 218
HSL
185°, 68%, 55%
CMYK
71, 6, 0, 15
Luminance
0.4981

Every format

HEX#40cdda
RGBrgb(64, 205, 218)
HSLhsl(185, 68%, 55%)
CMYKcmyk(71%, 6%, 0%, 15%)
LABlab(76.0 -32.6 -17.3)
LCHlch(76.0 36.9 208.0)
OKLCHoklch(0.780 0.118 204.1)

Copy-ready code

/* CSS */
color: #40cdda;
background-color: #40cdda;
/* Tailwind (arbitrary) */
class="text-[#40cdda] bg-[#40cdda]"
/* SCSS */
$brand: #40cdda;
/* SwiftUI */
Color(red: 0.251, green: 0.804, blue: 0.855)
/* Android */
Color.parseColor("#40cdda")

Accessibility — WCAG contrast

Aa
#40cdda on white: 1.92:1
AA ✗ fail · AA-large · AAA
Aa
#40cdda on black: 10.96:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red25.1%
Green80.4%
Blue85.5%

CMYK percentages

Cyan70.6%
Magenta6.0%
Yellow0.0%
Key (black)14.5%

Color previews

#40cdda text on a black background

contrast 10.96:1

Card sample

#40cdda text on a white background

contrast 1.92:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(64, 205, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 205, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40cdda;
background: linear-gradient(135deg, #40cdda, #4066DA);

Monochromatic scale

Palettes built from #40cdda

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #40cdda in the Color Lab