#40B6D6#40B6D6

#40B6D6 is a light, moderate cyan. Relative luminance 0.394; OKLCH L 72.4% C 0.112 H 219.6°. Best body text is #000000 at 8.88:1 contrast (WCAG AA passes).

Color values

HEX#40B6D6
RGBrgb(64, 182, 214)
HSLhsl(193, 65%, 55%)
HSVhsv(193, 70%, 84%)
CMYKcmyk(70.1%, 15%, 0%, 16.1%)
CIE-LABlab(69.04, -22.46, -25.65)
CIE-LCHlch(69.04, 34.09, 228.79°)
OKLaboklab(72.4% -0.0864 -0.0716)
OKLCHoklch(72.4% 0.112 219.6)
XYZxyz(30.9749, 39.3974, 69.5773)
Luminance0.3940 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40B6D6 #D66040
analogous
#40D6AB #40B6D6 #406BD6
triadic
#40B6D6 #D640B6 #B6D640
tetradic
#40B6D6 #AB40D6 #D66040 #6BD640
square
#40B6D6 #AB40D6 #D66040 #6BD640
split-complementary
#40B6D6 #D6406B #D6AB40
monochromatic
#1B6B80 #2695B2 #40B6D6 #72C9E1 #A5DDEC

Accessibility & contrast

On white

2.36
#40B6D6 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.88
#40B6D6 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B6D6
8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40B6D6#FFFFFF#000000##000000
##40B6D61.002.368.888.88
#FFFFFF2.361.0021.0021.00
#0000008.8821.001.001.00
##0000008.8821.001.001.00

Color blindness preview

Protanopia (red-blind)
#A2B1D8
Deuteranopia (green-blind)
#8DA2D6
Tritanopia (blue-blind)
#00C1C0
Achromatopsia (no color)
#A8A8A8

Design tokens & code

CSS
--color: #40b6d6;
/* rgb */ color: rgb(64, 182, 214);
/* oklch */ color: oklch(72.4% 0.112 219.6);
Tailwind
colors: {
  custom: {
    50: '#88cce2',
    500: '#40b6d6',
    950: '#000000',
  },
}
SCSS
$custom: #40b6d6;
$custom-light: #88cce2;
$custom-dark: #000000;
JSON
{
  "hex": "#40b6d6",
  "rgb": {
    "r": 64,
    "g": 182,
    "b": 214
  },
  "hsl": {
    "h": 192.8,
    "s": 64.655,
    "l": 54.51
  },
  "oklch": {
    "l": 0.72403,
    "c": 0.11224,
    "h": 219.6
  },
  "luminance": 0.39401
}

Semantic roles & 50–950 ramp

primary
#40B6D6
secondary
#D9A799
accent
#6440E8
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #40B6D6

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

Preview Lab → · Contrast checker → · Palette generator →

#40B6D6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva