#428EC9#428EC9

#428EC9 is a light, moderate cyan. Relative luminance 0.247; OKLCH L 62.5% C 0.117 H 244.8°. Best body text is #000000 at 5.94:1 contrast (WCAG AA passes).

Color values

HEX#428EC9
RGBrgb(66, 142, 201)
HSLhsl(206, 56%, 52%)
HSVhsv(206, 67%, 79%)
CMYKcmyk(67.2%, 29.4%, 0%, 21.2%)
CIE-LABlab(56.80, -4.68, -37.38)
CIE-LCHlch(56.80, 37.67, 262.86°)
OKLaboklab(62.49% -0.0498 -0.1056)
OKLCHoklch(62.49% 0.117 244.8)
XYZxyz(22.4584, 24.7189, 58.8347)
Luminance0.2472 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#428EC9 #C97D42
analogous
#42C9C1 #428EC9 #424BC9
triadic
#428EC9 #C9428E #8EC942
tetradic
#428EC9 #C142C9 #C97D42 #4BC942
square
#428EC9 #C142C9 #C97D42 #4BC942
split-complementary
#428EC9 #C9424B #C9C142
monochromatic
#204D70 #2E6EA0 #428EC9 #72AAD7 #A1C7E4

Accessibility & contrast

On white

3.53
#428EC9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.94
#428EC9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EC9
5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##428EC9#FFFFFF#000000##000000
##428EC91.003.535.945.94
#FFFFFF3.531.0021.0021.00
#0000005.9421.001.001.00
##0000005.9421.001.001.00

Color blindness preview

Protanopia (red-blind)
#7490CC
Deuteranopia (green-blind)
#6182C8
Tritanopia (blue-blind)
#009CA3
Achromatopsia (no color)
#888888

Design tokens & code

CSS
--color: #428ec9;
/* rgb */ color: rgb(66, 142, 201);
/* oklch */ color: oklch(62.5% 0.117 244.8);
Tailwind
colors: {
  custom: {
    50: '#85aed9',
    500: '#428ec9',
    950: '#000000',
  },
}
SCSS
$custom: #428ec9;
$custom-light: #85aed9;
$custom-dark: #000000;
JSON
{
  "hex": "#428ec9",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 201
  },
  "hsl": {
    "h": 206.222,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.62494,
    "c": 0.1167,
    "h": 244.8
  },
  "luminance": 0.24721
}

Semantic roles & 50–950 ramp

primary
#428EC9
secondary
#D1B096
accent
#8A49DF
background
#F8FAFD
surface
#F0F4FA
border
#CBCED3
text
#0C1014
muted
#7D7F83

Preview Lab

Preview with #428EC9

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

Preview Lab → · Contrast checker → · Palette generator →

#428EC9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva