#2428B1#2428B1

#2428B1 is a dark, highly saturated blue. Relative luminance 0.051; OKLCH L 39.0% C 0.208 H 270.4°. Best body text is #FFFFFF at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#2428B1
RGB	rgb(36, 40, 177)
HSL	hsl(238, 66%, 42%)
HSV	hsv(238, 80%, 69%)
CMYK	cmyk(79.7%, 77.4%, 0%, 30.6%)
CIE-LAB	lab(26.92, 46.38, -71.66)
CIE-LCH	lch(26.92, 85.36, 302.91°)
OKLab	oklab(38.98% 0.0014 -0.2075)
OKLCH	oklch(38.98% 0.208 270.4)
XYZ	xyz(9.4195, 5.0659, 42.0678)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2428B1 #B1AD24

analogous

#246FB1 #2428B1 #6724B1

triadic

#2428B1 #B12428 #28B124

tetradic

#2428B1 #B1246F #B1AD24 #24B167

square

#2428B1 #B1246F #B1AD24 #24B167

split-complementary

#2428B1 #B16724 #6FB124

monochromatic

#0F114B #1A1D7E #2428B1 #3B3FD7 #6E71E1

Accessibility & contrast

On white

10.43

#2428B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#2428B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2428B1

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2428B1	#FFFFFF	#000000	##FFFFFF
##2428B1	1.00	10.43	2.01	10.43
#FFFFFF	10.43	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B5

Deuteranopia (green-blind)

#0038AF

Tritanopia (blue-blind)

#00516B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2428b1;
/* rgb */ color: rgb(36, 40, 177);
/* oklch */ color: oklch(39.0% 0.208 270.4);

Tailwind

colors: {
  custom: {
    50: '#7964ca',
    500: '#2428b1',
    950: '#000000',
  },
}

SCSS

$custom: #2428b1;
$custom-light: #7964ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2428b1",
  "rgb": {
    "r": 36,
    "g": 40,
    "b": 177
  },
  "hsl": {
    "h": 238.298,
    "s": 66.197,
    "l": 41.765
  },
  "oklch": {
    "l": 0.3898,
    "c": 0.20755,
    "h": 270.4
  },
  "luminance": 0.05067
}

Semantic roles & 50–950 ramp

primary

#2428B1

secondary

#C8C569

accent

#E43FE9

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2428B1

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

Preview Lab → · Contrast checker → · Palette generator →