#2428B0#2428B0

#2428B0 is a dark, highly saturated blue. Relative luminance 0.050; OKLCH L 38.9% C 0.206 H 270.5°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX#2428B0
RGBrgb(36, 40, 176)
HSLhsl(238, 66%, 42%)
HSVhsv(238, 80%, 69%)
CMYKcmyk(79.5%, 77.3%, 0%, 31%)
CIE-LABlab(26.81, 46.05, -71.25)
CIE-LCHlch(26.81, 84.83, 302.87°)
OKLaboklab(38.87% 0.0016 -0.2063)
OKLCHoklch(38.87% 0.206 270.5)
XYZxyz(9.3202, 5.0262, 41.5448)
Luminance0.0503 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#2428B0 #B0AC24
analogous
#246EB0 #2428B0 #6624B0
triadic
#2428B0 #B02428 #28B024
tetradic
#2428B0 #B0246E #B0AC24 #24B066
square
#2428B0 #B0246E #B0AC24 #24B066
split-complementary
#2428B0 #B06624 #6EB024
monochromatic
#0F114A #1A1C7D #2428B0 #3A3FD7 #6D71E1

Accessibility & contrast

On white

10.47
#2428B0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.01
#2428B0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2428B0
10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##2428B0#FFFFFF#000000##FFFFFF
##2428B01.0010.472.0110.47
#FFFFFF10.471.0021.001.00
#0000002.0121.001.0021.00
##FFFFFF10.471.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0046B4
Deuteranopia (green-blind)
#0038AE
Tritanopia (blue-blind)
#00516B
Achromatopsia (no color)
#3F3F3F

Design tokens & code

CSS
--color: #2428b0;
/* rgb */ color: rgb(36, 40, 176);
/* oklch */ color: oklch(38.9% 0.206 270.5);
Tailwind
colors: {
  custom: {
    50: '#7964c9',
    500: '#2428b0',
    950: '#000000',
  },
}
SCSS
$custom: #2428b0;
$custom-light: #7964c9;
$custom-dark: #000000;
JSON
{
  "hex": "#2428b0",
  "rgb": {
    "r": 36,
    "g": 40,
    "b": 176
  },
  "hsl": {
    "h": 238.286,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.38867,
    "c": 0.20636,
    "h": 270.5
  },
  "luminance": 0.05027
}

Semantic roles & 50–950 ramp

primary
#2428B0
secondary
#C8C568
accent
#E43FE9
background
#F8F6FC
surface
#EFEBF8
border
#CAC6D1
text
#0B0513
muted
#7C7A82

Preview Lab

Preview with #2428B0

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

Preview Lab → · Contrast checker → · Palette generator →

#2428B0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva