#40A9D0#40A9D0

#40A9D0 is a light, moderate cyan. Relative luminance 0.340; OKLCH L 69.1% C 0.110 H 226.6°. Best body text is #000000 at 7.80:1 contrast (WCAG AA passes).

Color values

HEX#40A9D0
RGBrgb(64, 169, 208)
HSLhsl(196, 61%, 53%)
HSVhsv(196, 69%, 82%)
CMYKcmyk(69.2%, 18.8%, 0%, 18.4%)
CIE-LABlab(64.98, -17.60, -28.59)
CIE-LCHlch(64.98, 33.57, 238.38°)
OKLaboklab(69.07% -0.0758 -0.08)
OKLCHoklch(69.07% 0.11 226.6)
XYZxyz(27.6829, 34.0169, 64.7692)
Luminance0.3402 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40A9D0 #D06740
analogous
#40D0AF #40A9D0 #4061D0
triadic
#40A9D0 #D040A9 #A9D040
tetradic
#40A9D0 #AF40D0 #D06740 #61D040
square
#40A9D0 #AF40D0 #D06740 #61D040
split-complementary
#40A9D0 #D04061 #D0AF40
monochromatic
#1E6078 #2A87A9 #40A9D0 #71BFDC #A2D5E8

Accessibility & contrast

On white

2.69
#40A9D0 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.80
#40A9D0 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A9D0
7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40A9D0#FFFFFF#000000##000000
##40A9D01.002.697.807.80
#FFFFFF2.691.0021.0021.00
#0000007.8021.001.001.00
##0000007.8021.001.001.00

Color blindness preview

Protanopia (red-blind)
#94A6D2
Deuteranopia (green-blind)
#8097D0
Tritanopia (blue-blind)
#00B4B6
Achromatopsia (no color)
#9E9E9E

Design tokens & code

CSS
--color: #40a9d0;
/* rgb */ color: rgb(64, 169, 208);
/* oklch */ color: oklch(69.1% 0.110 226.6);
Tailwind
colors: {
  custom: {
    50: '#86c2de',
    500: '#40a9d0',
    950: '#000000',
  },
}
SCSS
$custom: #40a9d0;
$custom-light: #86c2de;
$custom-dark: #000000;
JSON
{
  "hex": "#40a9d0",
  "rgb": {
    "r": 64,
    "g": 169,
    "b": 208
  },
  "hsl": {
    "h": 196.25,
    "s": 60.504,
    "l": 53.333
  },
  "oklch": {
    "l": 0.69073,
    "c": 0.11022,
    "h": 226.6
  },
  "luminance": 0.3402
}

Semantic roles & 50–950 ramp

primary
#40A9D0
secondary
#D5A897
accent
#6F44E4
background
#F8FBFD
surface
#F0F7FB
border
#CBD0D4
text
#0C1215
muted
#7D8183

Preview Lab

Preview with #40A9D0

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

Preview Lab → · Contrast checker → · Palette generator →

#40A9D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva