#40B6DB#40B6DB

#40B6DB is a light, moderate cyan. Relative luminance 0.397; OKLCH L 72.6% C 0.115 H 222.9°. Best body text is #000000 at 8.93:1 contrast (WCAG AA passes).

Color values

HEX#40B6DB
RGBrgb(64, 182, 219)
HSLhsl(194, 68%, 55%)
HSVhsv(194, 71%, 86%)
CMYKcmyk(70.8%, 16.9%, 0%, 14.1%)
CIE-LABlab(69.22, -20.88, -28.10)
CIE-LCHlch(69.22, 35.01, 233.38°)
OKLaboklab(72.61% -0.0846 -0.0786)
OKLCHoklch(72.61% 0.115 222.9)
XYZxyz(31.6232, 39.6567, 72.9920)
Luminance0.3966 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40B6DB #DB6540
analogous
#40DBB3 #40B6DB #4068DB
triadic
#40B6DB #DB40B6 #B6DB40
tetradic
#40B6DB #B340DB #DB6540 #68DB40
square
#40B6DB #B340DB #DB6540 #68DB40
split-complementary
#40B6DB #DB4068 #DBB340
monochromatic
#196D87 #2396BB #40B6DB #73CAE5 #A7DDEE

Accessibility & contrast

On white

2.35
#40B6DB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.93
#40B6DB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B6DB
8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40B6DB#FFFFFF#000000##000000
##40B6DB1.002.358.938.93
#FFFFFF2.351.0021.0021.00
#0000008.9321.001.001.00
##0000008.9321.001.001.00

Color blindness preview

Protanopia (red-blind)
#A1B2DD
Deuteranopia (green-blind)
#8BA2DB
Tritanopia (blue-blind)
#00C1C2
Achromatopsia (no color)
#A9A9A9

Design tokens & code

CSS
--color: #40b6db;
/* rgb */ color: rgb(64, 182, 219);
/* oklch */ color: oklch(72.6% 0.115 222.9);
Tailwind
colors: {
  custom: {
    50: '#88cce6',
    500: '#40b6db',
    950: '#000000',
  },
}
SCSS
$custom: #40b6db;
$custom-light: #88cce6;
$custom-dark: #000000;
JSON
{
  "hex": "#40b6db",
  "rgb": {
    "r": 64,
    "g": 182,
    "b": 219
  },
  "hsl": {
    "h": 194.323,
    "s": 68.282,
    "l": 55.49
  },
  "oklch": {
    "l": 0.72614,
    "c": 0.11543,
    "h": 222.9
  },
  "luminance": 0.3966
}

Semantic roles & 50–950 ramp

primary
#40B6DB
secondary
#DCAB9B
accent
#663DEB
background
#F9FCFE
surface
#F1F8FC
border
#CBD1D5
text
#0D1316
muted
#7E8284

Preview Lab

Preview with #40B6DB

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

Preview Lab → · Contrast checker → · Palette generator →

#40B6DB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva