#40B3D8#40B3D8

#40B3D8 is a light, moderate cyan. Relative luminance 0.383; OKLCH L 71.8% C 0.114 H 223.4°. Best body text is #000000 at 8.66:1 contrast (WCAG AA passes).

Color values

HEX#40B3D8
RGBrgb(64, 179, 216)
HSLhsl(195, 66%, 55%)
HSVhsv(195, 70%, 85%)
CMYKcmyk(70.4%, 17.1%, 0%, 15.3%)
CIE-LABlab(68.23, -20.28, -27.99)
CIE-LCHlch(68.23, 34.56, 234.07°)
OKLaboklab(71.78% -0.0827 -0.0783)
OKLCHoklch(71.78% 0.114 223.4)
XYZxyz(30.6240, 38.2846, 70.7281)
Luminance0.3829 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40B3D8 #D86540
analogous
#40D8B1 #40B3D8 #4067D8
triadic
#40B3D8 #D840B3 #B3D840
tetradic
#40B3D8 #B140D8 #D86540 #67D840
square
#40B3D8 #B140D8 #D86540 #67D840
split-complementary
#40B3D8 #D84067 #D8B140
monochromatic
#1B6A83 #2593B6 #40B3D8 #73C7E2 #A6DBED

Accessibility & contrast

On white

2.43
#40B3D8 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.66
#40B3D8 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B3D8
8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40B3D8#FFFFFF#000000##000000
##40B3D81.002.438.668.66
#FFFFFF2.431.0021.0021.00
#0000008.6621.001.001.00
##0000008.6621.001.001.00

Color blindness preview

Protanopia (red-blind)
#9EAFDA
Deuteranopia (green-blind)
#89A0D8
Tritanopia (blue-blind)
#00BEBF
Achromatopsia (no color)
#A6A6A6

Design tokens & code

CSS
--color: #40b3d8;
/* rgb */ color: rgb(64, 179, 216);
/* oklch */ color: oklch(71.8% 0.114 223.4);
Tailwind
colors: {
  custom: {
    50: '#88cae4',
    500: '#40b3d8',
    950: '#000000',
  },
}
SCSS
$custom: #40b3d8;
$custom-light: #88cae4;
$custom-dark: #000000;
JSON
{
  "hex": "#40b3d8",
  "rgb": {
    "r": 64,
    "g": 179,
    "b": 216
  },
  "hsl": {
    "h": 194.605,
    "s": 66.087,
    "l": 54.902
  },
  "oklch": {
    "l": 0.7178,
    "c": 0.11388,
    "h": 223.4
  },
  "luminance": 0.38288
}

Semantic roles & 50–950 ramp

primary
#40B3D8
secondary
#DAA99A
accent
#683FE9
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #40B3D8

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

Preview Lab → · Contrast checker → · Palette generator →

#40B3D8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva