#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
RGB	rgb(36, 40, 176)
HSL	hsl(238, 66%, 42%)
HSV	hsv(238, 80%, 69%)
CMYK	cmyk(79.5%, 77.3%, 0%, 31%)
CIE-LAB	lab(26.81, 46.05, -71.25)
CIE-LCH	lch(26.81, 84.83, 302.87°)
OKLab	oklab(38.87% 0.0016 -0.2063)
OKLCH	oklch(38.87% 0.206 270.5)
XYZ	xyz(9.3202, 5.0262, 41.5448)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

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
##2428B0	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

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 →