#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
RGBrgb(64, 177, 208)
HSLhsl(193, 61%, 53%)
HSVhsv(193, 69%, 82%)
CMYKcmyk(69.2%, 14.9%, 0%, 18.4%)
CIE-LABlab(67.34, -21.78, -24.95)
CIE-LCHlch(67.34, 33.12, 228.88°)
OKLaboklab(70.97% -0.0838 -0.0696)
OKLCHoklch(70.97% 0.109 219.7)
XYZxyz(29.2170, 37.0850, 65.2806)
Luminance0.3709 (WCAG relative)
Temperaturecool
Familycyan

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
##40B1D01.002.498.428.42
#FFFFFF2.491.0021.0021.00
#0000008.4221.001.001.00
##0000008.4221.001.001.00

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 →

#40B1D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva