#40D9BF#40D9BF

#40D9BF is a light, vivid teal. Relative luminance 0.545; OKLCH L 80.0% C 0.131 H 178.8°. Best body text is #000000 at 11.90:1 contrast (WCAG AA passes).

Color values

HEX#40D9BF
RGBrgb(64, 217, 191)
HSLhsl(170, 67%, 55%)
HSVhsv(170, 71%, 85%)
CMYKcmyk(70.5%, 0%, 12%, 14.9%)
CIE-LABlab(78.74, -45.49, 1.33)
CIE-LCHlch(78.74, 45.51, 178.33°)
OKLaboklab(80.02% -0.131 0.0028)
OKLCHoklch(80.02% 0.131 178.8)
XYZxyz(36.3266, 54.4730, 57.8799)
Luminance0.5448 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40D9BF #D9405A
analogous
#40D973 #40D9BF #40A6D9
triadic
#40D9BF #BF40D9 #D9BF40
tetradic
#40D9BF #7340D9 #D9405A #A6D940
square
#40D9BF #7340D9 #D9405A #A6D940
split-complementary
#40D9BF #D940A6 #D97340
monochromatic
#1A8472 #24B79E #40D9BF #73E3D0 #A6EDE1

Accessibility & contrast

On white

1.77
#40D9BF on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.90
#40D9BF on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40D9BF
11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40D9BF#FFFFFF#000000##000000
##40D9BF1.001.7711.9011.90
#FFFFFF1.771.0021.0021.00
#00000011.9021.001.001.00
##00000011.9021.001.001.00

Color blindness preview

Protanopia (red-blind)
#D0CCBE
Deuteranopia (green-blind)
#BBBCC1
Tritanopia (blue-blind)
#00DCD1
Achromatopsia (no color)
#C3C3C3

Design tokens & code

CSS
--color: #40d9bf;
/* rgb */ color: rgb(64, 217, 191);
/* oklch */ color: oklch(80.0% 0.131 178.8);
Tailwind
colors: {
  custom: {
    50: '#8ae5d2',
    500: '#40d9bf',
    950: '#000000',
  },
}
SCSS
$custom: #40d9bf;
$custom-light: #8ae5d2;
$custom-dark: #000000;
JSON
{
  "hex": "#40d9bf",
  "rgb": {
    "r": 64,
    "g": 217,
    "b": 191
  },
  "hsl": {
    "h": 169.804,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.80024,
    "c": 0.131,
    "h": 178.8
  },
  "luminance": 0.54477
}

Semantic roles & 50–950 ramp

primary
#40D9BF
secondary
#8B3241
accent
#3E5BEA
background
#FCFEFE
surface
#F4FCFB
border
#CED5D4
text
#0D1614
muted
#7F8483

Preview Lab

Preview with #40D9BF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →

#40D9BF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva