#40D9DF#40D9DF

#40D9DF is a light, vivid teal. Relative luminance 0.560; OKLCH L 81.1% C 0.124 H 198.9°. Best body text is #000000 at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#40D9DF
RGB	rgb(64, 217, 223)
HSL	hsl(182, 71%, 56%)
HSV	hsv(182, 71%, 87%)
CMYK	cmyk(71.3%, 2.7%, 0%, 12.5%)
CIE-LAB	lab(79.64, -36.78, -14.44)
CIE-LCH	lch(79.64, 39.51, 201.44°)
OKLab	oklab(81.05% -0.117 -0.0401)
OKLCH	oklch(81.05% 0.124 198.9)
XYZ	xyz(40.2405, 56.0386, 78.4934)
Luminance	0.5604 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40D9DF #DF4640

analogous

#40DF96 #40D9DF #408ADF

triadic

#40D9DF #DF40D9 #D9DF40

tetradic

#40D9DF #9640DF #DF4640 #8ADF40

square

#40D9DF #9640DF #DF4640 #8ADF40

split-complementary

#40D9DF #DF408A #DF9640

monochromatic

#18898D #20BBC1 #40D9DF #74E3E8 #A9EEF1

Accessibility & contrast

On white

1.72

#40D9DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.21

#40D9DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40D9DF

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40D9DF	#FFFFFF	#000000	##000000
##40D9DF	1.00	1.72	12.21	12.21
#FFFFFF	1.72	1.00	21.00	21.00
#000000	12.21	21.00	1.00	1.00
##000000	12.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C9CFE0

Deuteranopia (green-blind)

#B2BEE0

Tritanopia (blue-blind)

#00E1DA

Achromatopsia (no color)

#C5C5C5

Design tokens & code

CSS

--color: #40d9df;
/* rgb */ color: rgb(64, 217, 223);
/* oklch */ color: oklch(81.1% 0.124 198.9);

Tailwind

colors: {
  custom: {
    50: '#8ce5e9',
    500: '#40d9df',
    950: '#000000',
  },
}

SCSS

$custom: #40d9df;
$custom-light: #8ce5e9;
$custom-dark: #000000;

JSON

{
  "hex": "#40d9df",
  "rgb": {
    "r": 64,
    "g": 217,
    "b": 223
  },
  "hsl": {
    "h": 182.264,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.81054,
    "c": 0.12368,
    "h": 198.9
  },
  "luminance": 0.56043
}

Semantic roles & 50–950 ramp

primary

#40D9DF

secondary

#923531

accent

#413AEE

background

#FCFEFE

surface

#F5FCFC

border

#CFD5D5

text

#0E1616

muted

#7F8484

Preview Lab

Preview with #40D9DF

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

Preview Lab → · Contrast checker → · Palette generator →