#40C3ED#40C3ED

#40C3ED is a light, vivid cyan. Relative luminance 0.462; OKLCH L 76.4% C 0.125 H 223.8°. Best body text is #000000 at 10.25:1 contrast (WCAG AA passes).

Color values

HEX#40C3ED
RGBrgb(64, 195, 237)
HSLhsl(195, 83%, 59%)
HSVhsv(195, 73%, 93%)
CMYKcmyk(73%, 17.7%, 0%, 7.1%)
CIE-LABlab(73.69, -21.83, -31.00)
CIE-LCHlch(73.69, 37.92, 234.85°)
OKLaboklab(76.42% -0.0904 -0.0868)
OKLCHoklch(76.42% 0.125 223.8)
XYZxyz(36.9092, 46.2303, 87.0824)
Luminance0.4623 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40C3ED #ED6A40
analogous
#40EDC0 #40C3ED #406DED
triadic
#40C3ED #ED40C3 #C3ED40
tetradic
#40C3ED #C040ED #ED6A40 #6DED40
square
#40C3ED #C040ED #ED6A40 #6DED40
split-complementary
#40C3ED #ED406D #EDC040
monochromatic
#0F7FA3 #15ABDB #40C3ED #78D5F2 #B0E6F8

Accessibility & contrast

On white

2.05
#40C3ED on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.25
#40C3ED on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C3ED
10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40C3ED#FFFFFF#000000##000000
##40C3ED1.002.0510.2510.25
#FFFFFF2.051.0021.0021.00
#00000010.2521.001.001.00
##00000010.2521.001.001.00

Color blindness preview

Protanopia (red-blind)
#ABBFEF
Deuteranopia (green-blind)
#94AEED
Tritanopia (blue-blind)
#00D0D1
Achromatopsia (no color)
#B5B5B5

Design tokens & code

CSS
--color: #40c3ed;
/* rgb */ color: rgb(64, 195, 237);
/* oklch */ color: oklch(76.4% 0.125 223.8);
Tailwind
colors: {
  custom: {
    50: '#8cd5f3',
    500: '#40c3ed',
    950: '#000000',
  },
}
SCSS
$custom: #40c3ed;
$custom-light: #8cd5f3;
$custom-dark: #000000;
JSON
{
  "hex": "#40c3ed",
  "rgb": {
    "r": 64,
    "g": 195,
    "b": 237
  },
  "hsl": {
    "h": 194.566,
    "s": 82.775,
    "l": 59.02
  },
  "oklch": {
    "l": 0.76422,
    "c": 0.12533,
    "h": 223.8
  },
  "luminance": 0.46235
}

Semantic roles & 50–950 ramp

primary
#40C3ED
secondary
#E6B3A2
accent
#602FF9
background
#F9FDFE
surface
#F2FAFD
border
#CCD3D5
text
#0E1417
muted
#7E8385

Preview Lab

Preview with #40C3ED

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

Preview Lab → · Contrast checker → · Palette generator →

#40C3ED Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva