#4090D3#4090D3

#4090D3 is a light, vivid cyan. Relative luminance 0.257; OKLCH L 63.4% C 0.128 H 246.9°. Best body text is #000000 at 6.15:1 contrast (WCAG AA passes).

Color values

HEX#4090D3
RGBrgb(64, 144, 211)
HSLhsl(207, 63%, 54%)
HSVhsv(207, 70%, 83%)
CMYKcmyk(69.7%, 31.8%, 0%, 17.3%)
CIE-LABlab(57.79, -2.72, -41.47)
CIE-LCHlch(57.79, 41.55, 266.25°)
OKLaboklab(63.41% -0.0501 -0.1174)
OKLCHoklch(63.41% 0.128 246.9)
XYZxyz(23.8410, 25.7371, 65.3267)
Luminance0.2574 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4090D3 #D38340
analogous
#40D3CD #4090D3 #4047D3
triadic
#4090D3 #D34090 #90D340
tetradic
#4090D3 #CD40D3 #D38340 #47D340
square
#4090D3 #CD40D3 #D38340 #47D340
split-complementary
#4090D3 #D34047 #D3CD40
monochromatic
#1D517C #2871AE #4090D3 #72ADDE #A3CAEA

Accessibility & contrast

On white

3.42
#4090D3 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.15
#4090D3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4090D3
6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4090D3#FFFFFF#000000##000000
##4090D31.003.426.156.15
#FFFFFF3.421.0021.0021.00
#0000006.1521.001.001.00
##0000006.1521.001.001.00

Color blindness preview

Protanopia (red-blind)
#7293D6
Deuteranopia (green-blind)
#5D85D2
Tritanopia (blue-blind)
#00A0A8
Achromatopsia (no color)
#8B8B8B

Design tokens & code

CSS
--color: #4090d3;
/* rgb */ color: rgb(64, 144, 211);
/* oklch */ color: oklch(63.4% 0.128 246.9);
Tailwind
colors: {
  custom: {
    50: '#85b0e1',
    500: '#4090d3',
    950: '#000000',
  },
}
SCSS
$custom: #4090d3;
$custom-light: #85b0e1;
$custom-dark: #000000;
JSON
{
  "hex": "#4090d3",
  "rgb": {
    "r": 64,
    "g": 144,
    "b": 211
  },
  "hsl": {
    "h": 207.347,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.63408,
    "c": 0.12766,
    "h": 246.9
  },
  "luminance": 0.2574
}

Semantic roles & 50–950 ramp

primary
#4090D3
secondary
#D7B598
accent
#8D42E6
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #4090D3

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

Preview Lab → · Contrast checker → · Palette generator →

#4090D3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva