#40C3E1#40C3E1

#40C3E1 is a light, moderate cyan. Relative luminance 0.456; OKLCH L 75.9% C 0.118 H 216.5°. Best body text is #000000 at 10.11:1 contrast (WCAG AA passes).

Color values

HEX#40C3E1
RGBrgb(64, 195, 225)
HSLhsl(191, 73%, 57%)
HSVhsv(191, 72%, 88%)
CMYKcmyk(71.6%, 13.3%, 0%, 11.8%)
CIE-LABlab(73.25, -25.60, -25.19)
CIE-LCHlch(73.25, 35.92, 224.53°)
OKLaboklab(75.92% -0.0949 -0.0703)
OKLCHoklch(75.92% 0.118 216.5)
XYZxyz(35.2143, 45.5523, 78.1561)
Luminance0.4556 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40C3E1 #E15E40
analogous
#40E1AF #40C3E1 #4073E1
triadic
#40C3E1 #E140C3 #C3E140
tetradic
#40C3E1 #AF40E1 #E15E40 #73E140
square
#40C3E1 #AF40E1 #E15E40 #73E140
split-complementary
#40C3E1 #E14073 #E1AF40
monochromatic
#177990 #1FA6C5 #40C3E1 #75D4E9 #AAE4F2

Accessibility & contrast

On white

2.08
#40C3E1 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.11
#40C3E1 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C3E1
10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40C3E1#FFFFFF#000000##000000
##40C3E11.002.0810.1110.11
#FFFFFF2.081.0021.0021.00
#00000010.1121.001.001.00
##00000010.1121.001.001.00

Color blindness preview

Protanopia (red-blind)
#AFBDE3
Deuteranopia (green-blind)
#99ADE1
Tritanopia (blue-blind)
#00CECC
Achromatopsia (no color)
#B4B4B4

Design tokens & code

CSS
--color: #40c3e1;
/* rgb */ color: rgb(64, 195, 225);
/* oklch */ color: oklch(75.9% 0.118 216.5);
Tailwind
colors: {
  custom: {
    50: '#8ad5ea',
    500: '#40c3e1',
    950: '#000000',
  },
}
SCSS
$custom: #40c3e1;
$custom-light: #8ad5ea;
$custom-dark: #000000;
JSON
{
  "hex": "#40c3e1",
  "rgb": {
    "r": 64,
    "g": 195,
    "b": 225
  },
  "hsl": {
    "h": 191.18,
    "s": 72.851,
    "l": 56.667
  },
  "oklch": {
    "l": 0.75923,
    "c": 0.11809,
    "h": 216.5
  },
  "luminance": 0.45556
}

Semantic roles & 50–950 ramp

primary
#40C3E1
secondary
#DFAA9D
accent
#5A38F0
background
#F9FDFE
surface
#F2FAFD
border
#CCD3D5
text
#0D1416
muted
#7E8384

Preview Lab

Preview with #40C3E1

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

Preview Lab → · Contrast checker → · Palette generator →

#40C3E1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva