#40D8DF#40D8DF

#40D8DF is a light, vivid teal. Relative luminance 0.555; OKLCH L 80.8% C 0.123 H 199.6°. Best body text is #000000 at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#40D8DF
RGB	rgb(64, 216, 223)
HSL	hsl(183, 71%, 56%)
HSV	hsv(183, 71%, 87%)
CMYK	cmyk(71.3%, 3.1%, 0%, 12.5%)
CIE-LAB	lab(79.34, -36.32, -14.88)
CIE-LCH	lch(79.34, 39.25, 202.28°)
OKLab	oklab(80.82% -0.116 -0.0413)
OKLCH	oklch(80.82% 0.123 199.6)
XYZ	xyz(39.9835, 55.5247, 78.4078)
Luminance	0.5553 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40D8DF #DF4740

analogous

#40DF97 #40D8DF #4089DF

triadic

#40D8DF #DF40D8 #D8DF40

tetradic

#40D8DF #9740DF #DF4740 #89DF40

square

#40D8DF #9740DF #DF4740 #89DF40

split-complementary

#40D8DF #DF4089 #DF9740

monochromatic

#18888D #20BAC1 #40D8DF #74E3E8 #A9EDF1

Accessibility & contrast

On white

1.73

#40D8DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.11

#40D8DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40D8DF

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40D8DF	#FFFFFF	#000000	##000000
##40D8DF	1.00	1.73	12.11	12.11
#FFFFFF	1.73	1.00	21.00	21.00
#000000	12.11	21.00	1.00	1.00
##000000	12.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8CEE0

Deuteranopia (green-blind)

#B1BDE0

Tritanopia (blue-blind)

#00E0DA

Achromatopsia (no color)

#C5C5C5

Design tokens & code

CSS

--color: #40d8df;
/* rgb */ color: rgb(64, 216, 223);
/* oklch */ color: oklch(80.8% 0.123 199.6);

Tailwind

colors: {
  custom: {
    50: '#8ce4e9',
    500: '#40d8df',
    950: '#000000',
  },
}

SCSS

$custom: #40d8df;
$custom-light: #8ce4e9;
$custom-dark: #000000;

JSON

{
  "hex": "#40d8df",
  "rgb": {
    "r": 64,
    "g": 216,
    "b": 223
  },
  "hsl": {
    "h": 182.642,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.80816,
    "c": 0.12318,
    "h": 199.6
  },
  "luminance": 0.55529
}

Semantic roles & 50–950 ramp

primary

#40D8DF

secondary

#923531

accent

#423AEE

background

#FCFEFE

surface

#F5FCFC

border

#CFD5D5

text

#0E1516

muted

#7F8484

Preview Lab

Preview with #40D8DF

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

Preview Lab → · Contrast checker → · Palette generator →