#40BDD9#40BDD9

#40BDD9 is a light, moderate cyan. Relative luminance 0.425; OKLCH L 74.2% C 0.114 H 215.9°. Best body text is #000000 at 9.50:1 contrast (WCAG AA passes).

Color values

HEX#40BDD9
RGBrgb(64, 189, 217)
HSLhsl(191, 67%, 55%)
HSVhsv(191, 71%, 85%)
CMYKcmyk(70.5%, 12.9%, 0%, 14.9%)
CIE-LABlab(71.21, -25.08, -23.97)
CIE-LCHlch(71.21, 34.69, 223.70°)
OKLaboklab(74.18% -0.0922 -0.0668)
OKLCHoklch(74.18% 0.114 215.9)
XYZxyz(32.8311, 42.4911, 72.1035)
Luminance0.4249 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40BDD9 #D95C40
analogous
#40D9A8 #40BDD9 #4071D9
triadic
#40BDD9 #D940BD #BDD940
tetradic
#40BDD9 #A840D9 #D95C40 #71D940
square
#40BDD9 #A840D9 #D95C40 #71D940
split-complementary
#40BDD9 #D94071 #D9A840
monochromatic
#1A7184 #249CB7 #40BDD9 #73CFE3 #A6E0ED

Accessibility & contrast

On white

2.21
#40BDD9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.50
#40BDD9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BDD9
9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40BDD9#FFFFFF#000000##000000
##40BDD91.002.219.509.50
#FFFFFF2.211.0021.0021.00
#0000009.5021.001.001.00
##0000009.5021.001.001.00

Color blindness preview

Protanopia (red-blind)
#AAB7DB
Deuteranopia (green-blind)
#95A8D9
Tritanopia (blue-blind)
#00C7C6
Achromatopsia (no color)
#AEAEAE

Design tokens & code

CSS
--color: #40bdd9;
/* rgb */ color: rgb(64, 189, 217);
/* oklch */ color: oklch(74.2% 0.114 215.9);
Tailwind
colors: {
  custom: {
    50: '#89d1e4',
    500: '#40bdd9',
    950: '#000000',
  },
}
SCSS
$custom: #40bdd9;
$custom-light: #89d1e4;
$custom-dark: #000000;
JSON
{
  "hex": "#40bdd9",
  "rgb": {
    "r": 64,
    "g": 189,
    "b": 217
  },
  "hsl": {
    "h": 190.98,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.74183,
    "c": 0.11384,
    "h": 215.9
  },
  "luminance": 0.42495
}

Semantic roles & 50–950 ramp

primary
#40BDD9
secondary
#DAA69A
accent
#5D3EEA
background
#F9FCFD
surface
#F1F9FB
border
#CBD2D4
text
#0D1415
muted
#7E8283

Preview Lab

Preview with #40BDD9

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

Preview Lab → · Contrast checker → · Palette generator →

#40BDD9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva