#40C4ED#40C4ED

#40C4ED is a light, vivid cyan. Relative luminance 0.467; OKLCH L 76.7% C 0.125 H 223.1°. Best body text is #000000 at 10.34:1 contrast (WCAG AA passes).

Color values

HEX#40C4ED
RGBrgb(64, 196, 237)
HSLhsl(194, 83%, 59%)
HSVhsv(194, 73%, 93%)
CMYKcmyk(73%, 17.3%, 0%, 7.1%)
CIE-LABlab(73.98, -22.34, -30.55)
CIE-LCHlch(73.98, 37.85, 233.82°)
OKLaboklab(76.66% -0.0914 -0.0855)
OKLCHoklch(76.66% 0.125 223.1)
XYZxyz(37.1340, 46.6799, 87.1574)
Luminance0.4668 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40C4ED #ED6940
analogous
#40EDC0 #40C4ED #406EED
triadic
#40C4ED #ED40C4 #C4ED40
tetradic
#40C4ED #C040ED #ED6940 #6EED40
square
#40C4ED #C040ED #ED6940 #6EED40
split-complementary
#40C4ED #ED406E #EDC040
monochromatic
#0F80A3 #15ACDB #40C4ED #78D5F2 #B0E7F8

Accessibility & contrast

On white

2.03
#40C4ED on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.34
#40C4ED on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C4ED
10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40C4ED#FFFFFF#000000##000000
##40C4ED1.002.0310.3410.34
#FFFFFF2.031.0021.0021.00
#00000010.3421.001.001.00
##00000010.3421.001.001.00

Color blindness preview

Protanopia (red-blind)
#ADBFEF
Deuteranopia (green-blind)
#95AEED
Tritanopia (blue-blind)
#00D1D1
Achromatopsia (no color)
#B6B6B6

Design tokens & code

CSS
--color: #40c4ed;
/* rgb */ color: rgb(64, 196, 237);
/* oklch */ color: oklch(76.7% 0.125 223.1);
Tailwind
colors: {
  custom: {
    50: '#8cd6f3',
    500: '#40c4ed',
    950: '#000000',
  },
}
SCSS
$custom: #40c4ed;
$custom-light: #8cd6f3;
$custom-dark: #000000;
JSON
{
  "hex": "#40c4ed",
  "rgb": {
    "r": 64,
    "g": 196,
    "b": 237
  },
  "hsl": {
    "h": 194.22,
    "s": 82.775,
    "l": 59.02
  },
  "oklch": {
    "l": 0.76655,
    "c": 0.12514,
    "h": 223.1
  },
  "luminance": 0.46684
}

Semantic roles & 50–950 ramp

primary
#40C4ED
secondary
#E6B3A2
accent
#5F2FF9
background
#F9FDFE
surface
#F2FAFD
border
#CCD3D5
text
#0E1417
muted
#7E8385

Preview Lab

Preview with #40C4ED

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

Preview Lab → · Contrast checker → · Palette generator →

#40C4ED Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva