#4090CB#4090CB

#4090CB is a light, moderate cyan. Relative luminance 0.253; OKLCH L 63.0% C 0.118 H 243.7°. Best body text is #000000 at 6.07:1 contrast (WCAG AA passes).

Color values

HEX#4090CB
RGBrgb(64, 144, 203)
HSLhsl(205, 57%, 52%)
HSVhsv(205, 68%, 80%)
CMYKcmyk(68.5%, 29.1%, 0%, 20.4%)
CIE-LABlab(57.41, -5.47, -37.56)
CIE-LCHlch(57.41, 37.95, 261.72°)
OKLaboklab(62.99% -0.0524 -0.1061)
OKLCHoklch(62.99% 0.118 243.7)
XYZxyz(22.8630, 25.3459, 60.1757)
Luminance0.2535 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4090CB #CB7B40
analogous
#40CBC1 #4090CB #404ACB
triadic
#4090CB #CB4090 #90CB40
tetradic
#4090CB #C140CB #CB7B40 #4ACB40
square
#4090CB #C140CB #CB7B40 #4ACB40
split-complementary
#4090CB #CB404A #CBC140
monochromatic
#1F4F72 #2C70A2 #4090CB #70ACD8 #A0C8E5

Accessibility & contrast

On white

3.46
#4090CB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.07
#4090CB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4090CB
6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4090CB#FFFFFF#000000##000000
##4090CB1.003.466.076.07
#FFFFFF3.461.0021.0021.00
#0000006.0721.001.001.00
##0000006.0721.001.001.00

Color blindness preview

Protanopia (red-blind)
#7591CE
Deuteranopia (green-blind)
#6284CA
Tritanopia (blue-blind)
#009EA5
Achromatopsia (no color)
#8A8A8A

Design tokens & code

CSS
--color: #4090cb;
/* rgb */ color: rgb(64, 144, 203);
/* oklch */ color: oklch(63.0% 0.118 243.7);
Tailwind
colors: {
  custom: {
    50: '#84b0db',
    500: '#4090cb',
    950: '#000000',
  },
}
SCSS
$custom: #4090cb;
$custom-light: #84b0db;
$custom-dark: #000000;
JSON
{
  "hex": "#4090cb",
  "rgb": {
    "r": 64,
    "g": 144,
    "b": 203
  },
  "hsl": {
    "h": 205.468,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.62988,
    "c": 0.11833,
    "h": 243.7
  },
  "luminance": 0.25348
}

Semantic roles & 50–950 ramp

primary
#4090CB
secondary
#D2AF95
accent
#8847E0
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #4090CB

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

Preview Lab → · Contrast checker → · Palette generator →

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