#40B4D3#40B4D3

#40B4D3 is a light, moderate cyan. Relative luminance 0.384; OKLCH L 71.8% C 0.111 H 219.3°. Best body text is #000000 at 8.69:1 contrast (WCAG AA passes).

Color values

HEX#40B4D3
RGBrgb(64, 180, 211)
HSLhsl(193, 63%, 54%)
HSVhsv(193, 70%, 83%)
CMYKcmyk(69.7%, 14.7%, 0%, 17.3%)
CIE-LABlab(68.34, -22.38, -25.08)
CIE-LCHlch(68.34, 33.61, 228.25°)
OKLaboklab(71.8% -0.0856 -0.07)
OKLCHoklch(71.8% 0.111 219.3)
XYZxyz(30.1886, 38.4322, 67.4425)
Luminance0.3844 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40B4D3 #D35F40
analogous
#40D3A9 #40B4D3 #406BD3
triadic
#40B4D3 #D340B4 #B4D340
tetradic
#40B4D3 #A940D3 #D35F40 #6BD340
square
#40B4D3 #A940D3 #D35F40 #6BD340
split-complementary
#40B4D3 #D3406B #D3A940
monochromatic
#1D687C #2892AE #40B4D3 #72C8DE #A3DBEA

Accessibility & contrast

On white

2.42
#40B4D3 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.69
#40B4D3 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B4D3
8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40B4D3#FFFFFF#000000##000000
##40B4D31.002.428.698.69
#FFFFFF2.421.0021.0021.00
#0000008.6921.001.001.00
##0000008.6921.001.001.00

Color blindness preview

Protanopia (red-blind)
#A1AFD5
Deuteranopia (green-blind)
#8CA0D3
Tritanopia (blue-blind)
#00BEBE
Achromatopsia (no color)
#A7A7A7

Design tokens & code

CSS
--color: #40b4d3;
/* rgb */ color: rgb(64, 180, 211);
/* oklch */ color: oklch(71.8% 0.111 219.3);
Tailwind
colors: {
  custom: {
    50: '#87cae0',
    500: '#40b4d3',
    950: '#000000',
  },
}
SCSS
$custom: #40b4d3;
$custom-light: #87cae0;
$custom-dark: #000000;
JSON
{
  "hex": "#40b4d3",
  "rgb": {
    "r": 64,
    "g": 180,
    "b": 211
  },
  "hsl": {
    "h": 192.653,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.71805,
    "c": 0.11057,
    "h": 219.3
  },
  "luminance": 0.38436
}

Semantic roles & 50–950 ramp

primary
#40B4D3
secondary
#D7A598
accent
#6542E6
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #40B4D3

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

Preview Lab → · Contrast checker → · Palette generator →

#40B4D3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva