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#40fddc

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

RGB
64, 253, 220
HSL
170°, 98%, 62%
CMYK
75, 0, 13, 1
Luminance
0.7651

Every format

HEX#40fddc
RGBrgb(64, 253, 220)
HSLhsl(170, 98%, 62%)
CMYKcmyk(75%, 0%, 13%, 1%)
LABlab(90.1 -53.3 2.6)
LCHlch(90.1 53.3 177.2)
OKLCHoklch(0.895 0.153 177.7)

Copy-ready code

/* CSS */
color: #40fddc;
background-color: #40fddc;
/* Tailwind (arbitrary) */
class="text-[#40fddc] bg-[#40fddc]"
/* SCSS */
$brand: #40fddc;
/* SwiftUI */
Color(red: 0.251, green: 0.992, blue: 0.863)
/* Android */
Color.parseColor("#40fddc")

Accessibility — WCAG contrast

Aa
#40fddc on white: 1.29:1
AA ✗ fail · AA-large · AAA
Aa
#40fddc on black: 16.30:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red25.1%
Green99.2%
Blue86.3%

CMYK percentages

Cyan74.7%
Magenta0.0%
Yellow13.0%
Key (black)0.8%

Color previews

#40fddc text on a black background

contrast 16.30:1

Card sample

#40fddc text on a white background

contrast 1.29:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(64, 253, 220, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 253, 220, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40fddc;
background: linear-gradient(135deg, #40fddc, #40A0FD);

Monochromatic scale

Palettes built from #40fddc

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #40fddc in the Color Lab