#40D3DF#40D3DF

#40D3DF is a light, vivid teal. Relative luminance 0.530; OKLCH L 79.6% C 0.121 H 203.1°. Best body text is #000000 at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#40D3DF
RGB	rgb(64, 211, 223)
HSL	hsl(185, 71%, 56%)
HSV	hsv(185, 71%, 87%)
CMYK	cmyk(71.3%, 5.4%, 0%, 12.5%)
CIE-LAB	lab(77.88, -33.98, -17.09)
CIE-LCH	lch(77.88, 38.03, 206.70°)
OKLab	oklab(79.63% -0.1112 -0.0475)
OKLCH	oklch(79.63% 0.121 203.1)
XYZ	xyz(38.7220, 53.0016, 77.9873)
Luminance	0.5301 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40D3DF #DF4C40

analogous

#40DF9C #40D3DF #4084DF

triadic

#40D3DF #DF40D3 #D3DF40

tetradic

#40D3DF #9C40DF #DF4C40 #84DF40

square

#40D3DF #9C40DF #DF4C40 #84DF40

split-complementary

#40D3DF #DF4084 #DF9C40

monochromatic

#18848D #20B5C1 #40D3DF #74DFE8 #A9EBF1

Accessibility & contrast

On white

1.81

#40D3DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.60

#40D3DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40D3DF

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40D3DF	#FFFFFF	#000000	##000000
##40D3DF	1.00	1.81	11.60	11.60
#FFFFFF	1.81	1.00	21.00	21.00
#000000	11.60	21.00	1.00	1.00
##000000	11.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2CAE0

Deuteranopia (green-blind)

#ACB9E0

Tritanopia (blue-blind)

#00DBD6

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #40d3df;
/* rgb */ color: rgb(64, 211, 223);
/* oklch */ color: oklch(79.6% 0.121 203.1);

Tailwind

colors: {
  custom: {
    50: '#8be1e9',
    500: '#40d3df',
    950: '#000000',
  },
}

SCSS

$custom: #40d3df;
$custom-light: #8be1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#40d3df",
  "rgb": {
    "r": 64,
    "g": 211,
    "b": 223
  },
  "hsl": {
    "h": 184.528,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.79629,
    "c": 0.12091,
    "h": 203.1
  },
  "luminance": 0.53006
}

Semantic roles & 50–950 ramp

primary

#40D3DF

secondary

#923831

accent

#473AEE

background

#FCFEFE

surface

#F5FCFC

border

#CFD5D5

text

#0E1516

muted

#7F8484

Preview Lab

Preview with #40D3DF

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

Preview Lab → · Contrast checker → · Palette generator →