#40ABD9#40ABD9

#40ABD9 is a light, moderate cyan. Relative luminance 0.352; OKLCH L 69.9% C 0.117 H 230.4°. Best body text is #000000 at 8.05:1 contrast (WCAG AA passes).

Color values

HEX#40ABD9
RGBrgb(64, 171, 217)
HSLhsl(198, 67%, 55%)
HSVhsv(198, 71%, 85%)
CMYKcmyk(70.5%, 21.2%, 0%, 14.9%)
CIE-LABlab(65.92, -15.74, -32.10)
CIE-LCHlch(65.92, 35.75, 243.87°)
OKLaboklab(69.95% -0.0745 -0.0901)
OKLCHoklch(69.95% 0.117 230.4)
XYZxyz(29.1966, 35.2223, 70.8920)
Luminance0.3523 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40ABD9 #D96E40
analogous
#40D9BA #40ABD9 #405FD9
triadic
#40ABD9 #D940AB #ABD940
tetradic
#40ABD9 #BA40D9 #D96E40 #5FD940
square
#40ABD9 #BA40D9 #D96E40 #5FD940
split-complementary
#40ABD9 #D9405F #D9BA40
monochromatic
#1A6484 #248BB7 #40ABD9 #73C1E3 #A6D8ED

Accessibility & contrast

On white

2.61
#40ABD9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.05
#40ABD9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40ABD9
8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40ABD9#FFFFFF#000000##000000
##40ABD91.002.618.058.05
#FFFFFF2.611.0021.0021.00
#0000008.0521.001.001.00
##0000008.0521.001.001.00

Color blindness preview

Protanopia (red-blind)
#94A9DB
Deuteranopia (green-blind)
#7F9AD8
Tritanopia (blue-blind)
#00B8BA
Achromatopsia (no color)
#A0A0A0

Design tokens & code

CSS
--color: #40abd9;
/* rgb */ color: rgb(64, 171, 217);
/* oklch */ color: oklch(69.9% 0.117 230.4);
Tailwind
colors: {
  custom: {
    50: '#87c4e5',
    500: '#40abd9',
    950: '#000000',
  },
}
SCSS
$custom: #40abd9;
$custom-light: #87c4e5;
$custom-dark: #000000;
JSON
{
  "hex": "#40abd9",
  "rgb": {
    "r": 64,
    "g": 171,
    "b": 217
  },
  "hsl": {
    "h": 198.039,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.69946,
    "c": 0.11691,
    "h": 230.4
  },
  "luminance": 0.35226
}

Semantic roles & 50–950 ramp

primary
#40ABD9
secondary
#DAAE9A
accent
#723EEA
background
#F9FCFE
surface
#F1F8FC
border
#CBD1D5
text
#0D1215
muted
#7E8184

Preview Lab

Preview with #40ABD9

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

Preview Lab → · Contrast checker → · Palette generator →

#40ABD9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva