#40C5E1#40C5E1

#40C5E1 is a light, moderate cyan. Relative luminance 0.465; OKLCH L 76.4% C 0.118 H 215.0°. Best body text is #000000 at 10.29:1 contrast (WCAG AA passes).

Color values

HEX#40C5E1
RGBrgb(64, 197, 225)
HSLhsl(190, 73%, 57%)
HSVhsv(190, 72%, 88%)
CMYKcmyk(71.6%, 12.4%, 0%, 11.8%)
CIE-LABlab(73.84, -26.60, -24.29)
CIE-LCHlch(73.84, 36.02, 222.40°)
OKLaboklab(76.39% -0.0969 -0.0677)
OKLCHoklch(76.39% 0.118 215)
XYZxyz(35.6655, 46.4546, 78.3065)
Luminance0.4646 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40C5E1 #E15C40
analogous
#40E1AD #40C5E1 #4075E1
triadic
#40C5E1 #E140C5 #C5E140
tetradic
#40C5E1 #AD40E1 #E15C40 #75E140
square
#40C5E1 #AD40E1 #E15C40 #75E140
split-complementary
#40C5E1 #E14075 #E1AD40
monochromatic
#177B90 #1FA8C5 #40C5E1 #75D5E9 #AAE5F2

Accessibility & contrast

On white

2.04
#40C5E1 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.29
#40C5E1 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C5E1
10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40C5E1#FFFFFF#000000##000000
##40C5E11.002.0410.2910.29
#FFFFFF2.041.0021.0021.00
#00000010.2921.001.001.00
##00000010.2921.001.001.00

Color blindness preview

Protanopia (red-blind)
#B1BFE3
Deuteranopia (green-blind)
#9BAEE1
Tritanopia (blue-blind)
#00CFCE
Achromatopsia (no color)
#B5B5B5

Design tokens & code

CSS
--color: #40c5e1;
/* rgb */ color: rgb(64, 197, 225);
/* oklch */ color: oklch(76.4% 0.118 215.0);
Tailwind
colors: {
  custom: {
    50: '#8ad7ea',
    500: '#40c5e1',
    950: '#000000',
  },
}
SCSS
$custom: #40c5e1;
$custom-light: #8ad7ea;
$custom-dark: #000000;
JSON
{
  "hex": "#40c5e1",
  "rgb": {
    "r": 64,
    "g": 197,
    "b": 225
  },
  "hsl": {
    "h": 190.435,
    "s": 72.851,
    "l": 56.667
  },
  "oklch": {
    "l": 0.76394,
    "c": 0.11818,
    "h": 215
  },
  "luminance": 0.46459
}

Semantic roles & 50–950 ramp

primary
#40C5E1
secondary
#DFA99D
accent
#5838F0
background
#F9FDFE
surface
#F2FAFD
border
#CCD3D5
text
#0D1416
muted
#7E8384

Preview Lab

Preview with #40C5E1

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

Preview Lab → · Contrast checker → · Palette generator →

#40C5E1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva