#40BCD8#40BCD8

#40BCD8 is a light, moderate cyan. Relative luminance 0.420; OKLCH L 73.9% C 0.113 H 216.1°. Best body text is #000000 at 9.40:1 contrast (WCAG AA passes).

Color values

HEX#40BCD8
RGBrgb(64, 188, 216)
HSLhsl(191, 66%, 55%)
HSVhsv(191, 70%, 85%)
CMYKcmyk(70.4%, 13%, 0%, 15.3%)
CIE-LABlab(70.88, -24.88, -23.93)
CIE-LCHlch(70.88, 34.52, 223.88°)
OKLaboklab(73.91% -0.0916 -0.0667)
OKLCHoklch(73.91% 0.113 216.1)
XYZxyz(32.4870, 42.0105, 71.3491)
Luminance0.4201 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40BCD8 #D85C40
analogous
#40D8A8 #40BCD8 #4070D8
triadic
#40BCD8 #D840BC #BCD840
tetradic
#40BCD8 #A840D8 #D85C40 #70D840
square
#40BCD8 #A840D8 #D85C40 #70D840
split-complementary
#40BCD8 #D84070 #D8A840
monochromatic
#1B7083 #259BB6 #40BCD8 #73CEE2 #A6E0ED

Accessibility & contrast

On white

2.23
#40BCD8 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.40
#40BCD8 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BCD8
9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40BCD8#FFFFFF#000000##000000
##40BCD81.002.239.409.40
#FFFFFF2.231.0021.0021.00
#0000009.4021.001.001.00
##0000009.4021.001.001.00

Color blindness preview

Protanopia (red-blind)
#A9B6DA
Deuteranopia (green-blind)
#94A7D8
Tritanopia (blue-blind)
#00C6C5
Achromatopsia (no color)
#ADADAD

Design tokens & code

CSS
--color: #40bcd8;
/* rgb */ color: rgb(64, 188, 216);
/* oklch */ color: oklch(73.9% 0.113 216.1);
Tailwind
colors: {
  custom: {
    50: '#88d0e4',
    500: '#40bcd8',
    950: '#000000',
  },
}
SCSS
$custom: #40bcd8;
$custom-light: #88d0e4;
$custom-dark: #000000;
JSON
{
  "hex": "#40bcd8",
  "rgb": {
    "r": 64,
    "g": 188,
    "b": 216
  },
  "hsl": {
    "h": 191.053,
    "s": 66.087,
    "l": 54.902
  },
  "oklch": {
    "l": 0.73905,
    "c": 0.1133,
    "h": 216.1
  },
  "luminance": 0.42014
}

Semantic roles & 50–950 ramp

primary
#40BCD8
secondary
#DAA69A
accent
#5E3FE9
background
#F9FCFD
surface
#F1F9FB
border
#CBD2D4
text
#0D1415
muted
#7E8283

Preview Lab

Preview with #40BCD8

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

Preview Lab → · Contrast checker → · Palette generator →

#40BCD8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva