#40B1CB#40B1CB

#40B1CB is a light, moderate cyan. Relative luminance 0.368; OKLCH L 70.8% C 0.106 H 216.1°. Best body text is #000000 at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#40B1CB
RGB	rgb(64, 177, 203)
HSL	hsl(191, 57%, 52%)
HSV	hsv(191, 68%, 80%)
CMYK	cmyk(68.5%, 12.8%, 0%, 20.4%)
CIE-LAB	lab(67.16, -23.35, -22.47)
CIE-LCH	lch(67.16, 32.41, 223.91°)
OKLab	oklab(70.76% -0.0857 -0.0626)
OKLCH	oklch(70.76% 0.106 216.1)
XYZ	xyz(28.6115, 36.8428, 62.0918)
Luminance	0.3685 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B1CB #CB5A40

analogous

#40CBA0 #40B1CB #406CCB

triadic

#40B1CB #CB40B1 #B1CB40

tetradic

#40B1CB #A040CB #CB5A40 #6CCB40

square

#40B1CB #A040CB #CB5A40 #6CCB40

split-complementary

#40B1CB #CB406C #CBA040

monochromatic

#1F6272 #2C8CA2 #40B1CB #70C5D8 #A0D8E5

Accessibility & contrast

On white

2.51

#40B1CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.37

#40B1CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B1CB

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B1CB	#FFFFFF	#000000	##000000
##40B1CB	1.00	2.51	8.37	8.37
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.37	21.00	1.00	1.00
##000000	8.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FACCC

Deuteranopia (green-blind)

#8C9DCB

Tritanopia (blue-blind)

#00BAB9

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #40b1cb;
/* rgb */ color: rgb(64, 177, 203);
/* oklch */ color: oklch(70.8% 0.106 216.1);

Tailwind

colors: {
  custom: {
    50: '#86c8da',
    500: '#40b1cb',
    950: '#000000',
  },
}

SCSS

$custom: #40b1cb;
$custom-light: #86c8da;
$custom-dark: #000000;

JSON

{
  "hex": "#40b1cb",
  "rgb": {
    "r": 64,
    "g": 177,
    "b": 203
  },
  "hsl": {
    "h": 191.223,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.70761,
    "c": 0.10615,
    "h": 216.1
  },
  "luminance": 0.36846
}

Semantic roles & 50–950 ramp

primary

#40B1CB

secondary

#D2A095

accent

#6447E0

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0C1315

muted

#7D8283

Preview Lab

Preview with #40B1CB

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

Preview Lab → · Contrast checker → · Palette generator →