#40B0C9#40B0C9

#40B0C9 is a light, moderate cyan. Relative luminance 0.364; OKLCH L 70.4% C 0.105 H 215.5°. Best body text is #000000 at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#40B0C9
RGB	rgb(64, 176, 201)
HSL	hsl(191, 56%, 52%)
HSV	hsv(191, 68%, 79%)
CMYK	cmyk(68.2%, 12.4%, 0%, 21.2%)
CIE-LAB	lab(66.79, -23.46, -21.93)
CIE-LCH	lch(66.79, 32.11, 223.08°)
OKLab	oklab(70.44% -0.0855 -0.0611)
OKLCH	oklch(70.44% 0.105 215.5)
XYZ	xyz(28.1779, 36.3545, 60.7791)
Luminance	0.3636 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B0C9 #C95940

analogous

#40C99E #40B0C9 #406CC9

triadic

#40B0C9 #C940B0 #B0C940

tetradic

#40B0C9 #9E40C9 #C95940 #6CC940

square

#40B0C9 #9E40C9 #C95940 #6CC940

split-complementary

#40B0C9 #C9406C #C99E40

monochromatic

#1F616F #2D8A9F #40B0C9 #70C4D6 #9FD7E4

Accessibility & contrast

On white

2.54

#40B0C9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.27

#40B0C9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B0C9

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B0C9	#FFFFFF	#000000	##000000
##40B0C9	1.00	2.54	8.27	8.27
#FFFFFF	2.54	1.00	21.00	21.00
#000000	8.27	21.00	1.00	1.00
##000000	8.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FABCA

Deuteranopia (green-blind)

#8B9CC9

Tritanopia (blue-blind)

#00B9B8

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #40b0c9;
/* rgb */ color: rgb(64, 176, 201);
/* oklch */ color: oklch(70.4% 0.105 215.5);

Tailwind

colors: {
  custom: {
    50: '#86c7d9',
    500: '#40b0c9',
    950: '#000000',
  },
}

SCSS

$custom: #40b0c9;
$custom-light: #86c7d9;
$custom-dark: #000000;

JSON

{
  "hex": "#40b0c9",
  "rgb": {
    "r": 64,
    "g": 176,
    "b": 201
  },
  "hsl": {
    "h": 190.949,
    "s": 55.918,
    "l": 51.961
  },
  "oklch": {
    "l": 0.70441,
    "c": 0.10508,
    "h": 215.5
  },
  "luminance": 0.36358
}

Semantic roles & 50–950 ramp

primary

#40B0C9

secondary

#D09F94

accent

#6449DF

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0C1314

muted

#7D8283

Preview Lab

Preview with #40B0C9

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

Preview Lab → · Contrast checker → · Palette generator →