#40B4D5#40B4D5

#40B4D5 is a light, moderate cyan. Relative luminance 0.385; OKLCH L 71.9% C 0.112 H 220.6°. Best body text is #000000 at 8.71:1 contrast (WCAG AA passes).

Color values

HEX#40B4D5
RGBrgb(64, 180, 213)
HSLhsl(193, 64%, 54%)
HSVhsv(193, 70%, 84%)
CMYKcmyk(70%, 15.5%, 0%, 16.5%)
CIE-LABlab(68.41, -21.75, -26.06)
CIE-LCHlch(68.41, 33.95, 230.15°)
OKLaboklab(71.89% -0.0848 -0.0728)
OKLCHoklch(71.89% 0.112 220.6)
XYZxyz(30.4409, 38.5331, 68.7712)
Luminance0.3854 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40B4D5 #D56140
analogous
#40D5AC #40B4D5 #406AD5
triadic
#40B4D5 #D540B4 #B4D540
tetradic
#40B4D5 #AC40D5 #D56140 #6AD540
square
#40B4D5 #AC40D5 #D56140 #6AD540
split-complementary
#40B4D5 #D5406A #D5AC40
monochromatic
#1C697F #2792B1 #40B4D5 #72C8E0 #A4DBEB

Accessibility & contrast

On white

2.41
#40B4D5 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.71
#40B4D5 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B4D5
8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40B4D5#FFFFFF#000000##000000
##40B4D51.002.418.718.71
#FFFFFF2.411.0021.0021.00
#0000008.7121.001.001.00
##0000008.7121.001.001.00

Color blindness preview

Protanopia (red-blind)
#A0AFD7
Deuteranopia (green-blind)
#8BA0D5
Tritanopia (blue-blind)
#00BFBF
Achromatopsia (no color)
#A7A7A7

Design tokens & code

CSS
--color: #40b4d5;
/* rgb */ color: rgb(64, 180, 213);
/* oklch */ color: oklch(71.9% 0.112 220.6);
Tailwind
colors: {
  custom: {
    50: '#87cae2',
    500: '#40b4d5',
    950: '#000000',
  },
}
SCSS
$custom: #40b4d5;
$custom-light: #87cae2;
$custom-dark: #000000;
JSON
{
  "hex": "#40b4d5",
  "rgb": {
    "r": 64,
    "g": 180,
    "b": 213
  },
  "hsl": {
    "h": 193.289,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.71888,
    "c": 0.11178,
    "h": 220.6
  },
  "luminance": 0.38537
}

Semantic roles & 50–950 ramp

primary
#40B4D5
secondary
#D8A799
accent
#6641E7
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #40B4D5

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

Preview Lab → · Contrast checker → · Palette generator →

#40B4D5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva