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#40ffec

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

RGB
64, 255, 236
HSL
174°, 100%, 63%
CMYK
75, 0, 8, 0
Luminance
0.7867

Every format

HEX#40ffec
RGBrgb(64, 255, 236)
HSLhsl(174, 100%, 63%)
CMYKcmyk(75%, 0%, 8%, 0%)
LABlab(91.1 -50.0 -4.3)
LCHlch(91.1 50.2 184.9)
OKLCHoklch(0.905 0.148 184.8)

Copy-ready code

/* CSS */
color: #40ffec;
background-color: #40ffec;
/* Tailwind (arbitrary) */
class="text-[#40ffec] bg-[#40ffec]"
/* SCSS */
$brand: #40ffec;
/* SwiftUI */
Color(red: 0.251, green: 1.000, blue: 0.925)
/* Android */
Color.parseColor("#40ffec")

Accessibility — WCAG contrast

Aa
#40ffec on white: 1.25:1
AA ✗ fail · AA-large · AAA
Aa
#40ffec on black: 16.73:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red25.1%
Green100.0%
Blue92.5%

CMYK percentages

Cyan74.9%
Magenta0.0%
Yellow7.5%
Key (black)0.0%

Color previews

#40ffec text on a black background

contrast 16.73:1

Card sample

#40ffec text on a white background

contrast 1.25:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(64, 255, 236, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 255, 236, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40ffec;
background: linear-gradient(135deg, #40ffec, #4093FF);

Monochromatic scale

Palettes built from #40ffec

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #40ffec in the Color Lab