#40B1D0#40B1D0

#40B1D0 is a light, moderate cyan. Relative luminance 0.371; OKLCH L 71.0% C 0.109 H 219.7°. Best body text is #000000 at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#40B1D0
RGB	rgb(64, 177, 208)
HSL	hsl(193, 61%, 53%)
HSV	hsv(193, 69%, 82%)
CMYK	cmyk(69.2%, 14.9%, 0%, 18.4%)
CIE-LAB	lab(67.34, -21.78, -24.95)
CIE-LCH	lch(67.34, 33.12, 228.88°)
OKLab	oklab(70.97% -0.0838 -0.0696)
OKLCH	oklch(70.97% 0.109 219.7)
XYZ	xyz(29.2170, 37.0850, 65.2806)
Luminance	0.3709 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B1D0 #D05F40

analogous

#40D0A7 #40B1D0 #4069D0

triadic

#40B1D0 #D040B1 #B1D040

tetradic

#40B1D0 #A740D0 #D05F40 #69D040

square

#40B1D0 #A740D0 #D05F40 #69D040

split-complementary

#40B1D0 #D04069 #D0A740

monochromatic

#1E6578 #2A8EA9 #40B1D0 #71C5DC #A2D9E8

Accessibility & contrast

On white

2.49

#40B1D0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.42

#40B1D0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B1D0

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B1D0	#FFFFFF	#000000	##000000
##40B1D0	1.00	2.49	8.42	8.42
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.42	21.00	1.00	1.00
##000000	8.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EACD2

Deuteranopia (green-blind)

#8A9ED0

Tritanopia (blue-blind)

#00BBBB

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #40b1d0;
/* rgb */ color: rgb(64, 177, 208);
/* oklch */ color: oklch(71.0% 0.109 219.7);

Tailwind

colors: {
  custom: {
    50: '#87c8de',
    500: '#40b1d0',
    950: '#000000',
  },
}

SCSS

$custom: #40b1d0;
$custom-light: #87c8de;
$custom-dark: #000000;

JSON

{
  "hex": "#40b1d0",
  "rgb": {
    "r": 64,
    "g": 177,
    "b": 208
  },
  "hsl": {
    "h": 192.917,
    "s": 60.504,
    "l": 53.333
  },
  "oklch": {
    "l": 0.70968,
    "c": 0.10894,
    "h": 219.7
  },
  "luminance": 0.37088
}

Semantic roles & 50–950 ramp

primary

#40B1D0

secondary

#D5A497

accent

#6644E4

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #40B1D0

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

Preview Lab → · Contrast checker → · Palette generator →