#40AAD9#40AAD9

#40AAD9 is a light, moderate cyan. Relative luminance 0.348; OKLCH L 69.7% C 0.117 H 231.2°. Best body text is #000000 at 7.97:1 contrast (WCAG AA passes).

Color values

HEX#40AAD9
RGBrgb(64, 170, 217)
HSLhsl(198, 67%, 55%)
HSVhsv(198, 71%, 85%)
CMYKcmyk(70.5%, 21.7%, 0%, 14.9%)
CIE-LABlab(65.63, -15.21, -32.55)
CIE-LCHlch(65.63, 35.93, 244.96°)
OKLaboklab(69.71% -0.0735 -0.0914)
OKLCHoklch(69.71% 0.117 231.2)
XYZxyz(29.0085, 34.8459, 70.8293)
Luminance0.3485 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40AAD9 #D96F40
analogous
#40D9BB #40AAD9 #405ED9
triadic
#40AAD9 #D940AA #AAD940
tetradic
#40AAD9 #BB40D9 #D96F40 #5ED940
square
#40AAD9 #BB40D9 #D96F40 #5ED940
split-complementary
#40AAD9 #D9405E #D9BB40
monochromatic
#1A6484 #248AB7 #40AAD9 #73C1E3 #A6D7ED

Accessibility & contrast

On white

2.63
#40AAD9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.97
#40AAD9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40AAD9
7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40AAD9#FFFFFF#000000##000000
##40AAD91.002.637.977.97
#FFFFFF2.631.0021.0021.00
#0000007.9721.001.001.00
##0000007.9721.001.001.00

Color blindness preview

Protanopia (red-blind)
#92A8DB
Deuteranopia (green-blind)
#7D99D8
Tritanopia (blue-blind)
#00B7BA
Achromatopsia (no color)
#9F9F9F

Design tokens & code

CSS
--color: #40aad9;
/* rgb */ color: rgb(64, 170, 217);
/* oklch */ color: oklch(69.7% 0.117 231.2);
Tailwind
colors: {
  custom: {
    50: '#87c3e5',
    500: '#40aad9',
    950: '#000000',
  },
}
SCSS
$custom: #40aad9;
$custom-light: #87c3e5;
$custom-dark: #000000;
JSON
{
  "hex": "#40aad9",
  "rgb": {
    "r": 64,
    "g": 170,
    "b": 217
  },
  "hsl": {
    "h": 198.431,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.69713,
    "c": 0.11731,
    "h": 231.2
  },
  "luminance": 0.34849
}

Semantic roles & 50–950 ramp

primary
#40AAD9
secondary
#DAAE9A
accent
#733EEA
background
#F9FBFE
surface
#F1F7FC
border
#CBD0D5
text
#0D1215
muted
#7E8184

Preview Lab

Preview with #40AAD9

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

Preview Lab → · Contrast checker → · Palette generator →

#40AAD9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva