#40B5D2#40B5D2

#40B5D2 is a light, moderate cyan. Relative luminance 0.388; OKLCH L 72.0% C 0.110 H 217.7°. Best body text is #000000 at 8.76:1 contrast (WCAG AA passes).

Color values

HEX#40B5D2
RGBrgb(64, 181, 210)
HSLhsl(192, 62%, 54%)
HSVhsv(192, 70%, 82%)
CMYKcmyk(69.5%, 13.8%, 0%, 17.6%)
CIE-LABlab(68.60, -23.21, -24.13)
CIE-LCHlch(68.60, 33.48, 226.12°)
OKLaboklab(72% -0.087 -0.0673)
OKLCHoklch(72% 0.11 217.7)
XYZxyz(30.2662, 38.7874, 66.8519)
Luminance0.3879 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40B5D2 #D25D40
analogous
#40D2A6 #40B5D2 #406CD2
triadic
#40B5D2 #D240B5 #B5D240
tetradic
#40B5D2 #A640D2 #D25D40 #6CD240
square
#40B5D2 #A640D2 #D25D40 #6CD240
split-complementary
#40B5D2 #D2406C #D2A640
monochromatic
#1D687B #2992AC #40B5D2 #72C8DE #A3DBE9

Accessibility & contrast

On white

2.40
#40B5D2 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.76
#40B5D2 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B5D2
8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40B5D2#FFFFFF#000000##000000
##40B5D21.002.408.768.76
#FFFFFF2.401.0021.0021.00
#0000008.7621.001.001.00
##0000008.7621.001.001.00

Color blindness preview

Protanopia (red-blind)
#A2B0D4
Deuteranopia (green-blind)
#8EA1D2
Tritanopia (blue-blind)
#00BFBE
Achromatopsia (no color)
#A7A7A7

Design tokens & code

CSS
--color: #40b5d2;
/* rgb */ color: rgb(64, 181, 210);
/* oklch */ color: oklch(72.0% 0.110 217.7);
Tailwind
colors: {
  custom: {
    50: '#87cbdf',
    500: '#40b5d2',
    950: '#000000',
  },
}
SCSS
$custom: #40b5d2;
$custom-light: #87cbdf;
$custom-dark: #000000;
JSON
{
  "hex": "#40b5d2",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 210
  },
  "hsl": {
    "h": 191.918,
    "s": 61.864,
    "l": 53.725
  },
  "oklch": {
    "l": 0.72,
    "c": 0.10998,
    "h": 217.7
  },
  "luminance": 0.38791
}

Semantic roles & 50–950 ramp

primary
#40B5D2
secondary
#D6A498
accent
#6343E5
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #40B5D2

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

Preview Lab → · Contrast checker → · Palette generator →

#40B5D2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva