#40D9E3#40D9E3

#40D9E3 is a light, vivid teal. Relative luminance 0.563; OKLCH L 81.2% C 0.124 H 201.5°. Best body text is #000000 at 12.25:1 contrast (WCAG AA passes).

Color values

HEX#40D9E3
RGBrgb(64, 217, 227)
HSLhsl(184, 74%, 57%)
HSVhsv(184, 72%, 89%)
CMYKcmyk(71.8%, 4.4%, 0%, 11%)
CIE-LABlab(79.76, -35.62, -16.39)
CIE-LCHlch(79.76, 39.21, 204.71°)
OKLaboklab(81.19% -0.1153 -0.0455)
OKLCHoklch(81.19% 0.124 201.5)
XYZxyz(40.7862, 56.2569, 81.3672)
Luminance0.5626 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40D9E3 #E34A40
analogous
#40E39C #40D9E3 #4088E3
triadic
#40D9E3 #E340D9 #D9E340
tetradic
#40D9E3 #9C40E3 #E34A40 #88E340
square
#40D9E3 #9C40E3 #E34A40 #88E340
split-complementary
#40D9E3 #E34088 #E39C40
monochromatic
#168B93 #1DBEC8 #40D9E3 #75E4EB #ABEEF3

Accessibility & contrast

On white

1.71
#40D9E3 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

12.25
#40D9E3 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40D9E3
12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40D9E3#FFFFFF#000000##000000
##40D9E31.001.7112.2512.25
#FFFFFF1.711.0021.0021.00
#00000012.2521.001.001.00
##00000012.2521.001.001.00

Color blindness preview

Protanopia (red-blind)
#C8D0E4
Deuteranopia (green-blind)
#B1BEE4
Tritanopia (blue-blind)
#00E1DC
Achromatopsia (no color)
#C6C6C6

Design tokens & code

CSS
--color: #40d9e3;
/* rgb */ color: rgb(64, 217, 227);
/* oklch */ color: oklch(81.2% 0.124 201.5);
Tailwind
colors: {
  custom: {
    50: '#8de5eb',
    500: '#40d9e3',
    950: '#000000',
  },
}
SCSS
$custom: #40d9e3;
$custom-light: #8de5eb;
$custom-dark: #000000;
JSON
{
  "hex": "#40d9e3",
  "rgb": {
    "r": 64,
    "g": 217,
    "b": 227
  },
  "hsl": {
    "h": 183.681,
    "s": 74.429,
    "l": 57.059
  },
  "oklch": {
    "l": 0.81195,
    "c": 0.12399,
    "h": 201.5
  },
  "luminance": 0.56262
}

Semantic roles & 50–950 ramp

primary
#40D9E3
secondary
#973630
accent
#4237F1
background
#FCFEFE
surface
#F5FCFD
border
#CFD5D5
text
#0E1616
muted
#7F8484

Preview Lab

Preview with #40D9E3

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

Preview Lab → · Contrast checker → · Palette generator →

#40D9E3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva