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#40f1df

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

RGB
64, 241, 223
HSL
174°, 86%, 60%
CMYK
73, 0, 8, 6
Luminance
0.6933

Every format

HEX#40f1df
RGBrgb(64, 241, 223)
HSLhsl(174, 86%, 60%)
CMYKcmyk(73%, 0%, 8%, 6%)
LABlab(86.7 -47.5 -4.0)
LCHlch(86.7 47.6 184.8)
OKLCHoklch(0.868 0.140 184.7)

Copy-ready code

/* CSS */
color: #40f1df;
background-color: #40f1df;
/* Tailwind (arbitrary) */
class="text-[#40f1df] bg-[#40f1df]"
/* SCSS */
$brand: #40f1df;
/* SwiftUI */
Color(red: 0.251, green: 0.945, blue: 0.875)
/* Android */
Color.parseColor("#40f1df")

Accessibility — WCAG contrast

Aa
#40f1df on white: 1.41:1
AA ✗ fail · AA-large · AAA
Aa
#40f1df on black: 14.87:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red25.1%
Green94.5%
Blue87.5%

CMYK percentages

Cyan73.4%
Magenta0.0%
Yellow7.5%
Key (black)5.5%

Color previews

#40f1df text on a black background

contrast 14.87:1

Card sample

#40f1df text on a white background

contrast 1.41:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #40f1df;
Background color
Panel with #40f1df background
background-color: #40f1df;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #40f1df;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(64, 241, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 241, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40f1df;
background: linear-gradient(135deg, #40f1df, #408DF1);

Monochromatic scale

Palettes built from #40f1df

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #40f1df in the Color Lab