#40C6E1#40C6E1

#40C6E1 is a light, moderate cyan. Relative luminance 0.469; OKLCH L 76.6% C 0.118 H 214.2°. Best body text is #000000 at 10.38:1 contrast (WCAG AA passes).

Color values

HEX#40C6E1
RGBrgb(64, 198, 225)
HSLhsl(190, 73%, 57%)
HSVhsv(190, 72%, 88%)
CMYKcmyk(71.6%, 12%, 0%, 11.8%)
CIE-LABlab(74.13, -27.10, -23.85)
CIE-LCHlch(74.13, 36.09, 221.35°)
OKLaboklab(76.63% -0.0978 -0.0664)
OKLCHoklch(76.63% 0.118 214.2)
XYZxyz(35.8933, 46.9102, 78.3824)
Luminance0.4691 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40C6E1 #E15B40
analogous
#40E1AC #40C6E1 #4076E1
triadic
#40C6E1 #E140C6 #C6E140
tetradic
#40C6E1 #AC40E1 #E15B40 #76E140
square
#40C6E1 #AC40E1 #E15B40 #76E140
split-complementary
#40C6E1 #E14076 #E1AC40
monochromatic
#177C90 #1FA9C5 #40C6E1 #75D6E9 #AAE6F2

Accessibility & contrast

On white

2.02
#40C6E1 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.38
#40C6E1 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C6E1
10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40C6E1#FFFFFF#000000##000000
##40C6E11.002.0210.3810.38
#FFFFFF2.021.0021.0021.00
#00000010.3821.001.001.00
##00000010.3821.001.001.00

Color blindness preview

Protanopia (red-blind)
#B2C0E3
Deuteranopia (green-blind)
#9CAFE1
Tritanopia (blue-blind)
#00D0CE
Achromatopsia (no color)
#B6B6B6

Design tokens & code

CSS
--color: #40c6e1;
/* rgb */ color: rgb(64, 198, 225);
/* oklch */ color: oklch(76.6% 0.118 214.2);
Tailwind
colors: {
  custom: {
    50: '#8ad7ea',
    500: '#40c6e1',
    950: '#000000',
  },
}
SCSS
$custom: #40c6e1;
$custom-light: #8ad7ea;
$custom-dark: #000000;
JSON
{
  "hex": "#40c6e1",
  "rgb": {
    "r": 64,
    "g": 198,
    "b": 225
  },
  "hsl": {
    "h": 190.062,
    "s": 72.851,
    "l": 56.667
  },
  "oklch": {
    "l": 0.76629,
    "c": 0.11826,
    "h": 214.2
  },
  "luminance": 0.46914
}

Semantic roles & 50–950 ramp

primary
#40C6E1
secondary
#DFA99D
accent
#5738F0
background
#F9FDFE
surface
#F2FAFD
border
#CCD3D5
text
#0D1416
muted
#7E8384

Preview Lab

Preview with #40C6E1

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

Preview Lab → · Contrast checker → · Palette generator →

#40C6E1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva