#2428A8#2428A8

#2428A8 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 38.0% C 0.197 H 270.9°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#2428A8
RGB	rgb(36, 40, 168)
HSL	hsl(238, 65%, 40%)
HSV	hsv(238, 79%, 66%)
CMYK	cmyk(78.6%, 76.2%, 0%, 34.1%)
CIE-LAB	lab(25.92, 43.37, -67.92)
CIE-LCH	lch(25.92, 80.58, 302.56°)
OKLab	oklab(37.98% 0.0031 -0.1967)
OKLCH	oklch(37.98% 0.197 270.9)
XYZ	xyz(8.5518, 4.7189, 37.4983)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2428A8 #A8A424

analogous

#246AA8 #2428A8 #6224A8

triadic

#2428A8 #A82428 #28A824

tetradic

#2428A8 #A8246A #A8A424 #24A862

square

#2428A8 #A8246A #A8A424 #24A862

split-complementary

#2428A8 #A86224 #6AA824

monochromatic

#0E1043 #191C76 #2428A8 #353AD4 #686BDF

Accessibility & contrast

On white

10.80

#2428A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#2428A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2428A8

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2428A8	#FFFFFF	#000000	##FFFFFF
##2428A8	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044AC

Deuteranopia (green-blind)

#0037A6

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2428a8;
/* rgb */ color: rgb(36, 40, 168);
/* oklch */ color: oklch(38.0% 0.197 270.9);

Tailwind

colors: {
  custom: {
    50: '#7764c3',
    500: '#2428a8',
    950: '#000000',
  },
}

SCSS

$custom: #2428a8;
$custom-light: #7764c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2428a8",
  "rgb": {
    "r": 36,
    "g": 40,
    "b": 168
  },
  "hsl": {
    "h": 238.182,
    "s": 64.706,
    "l": 40
  },
  "oklch": {
    "l": 0.37976,
    "c": 0.19669,
    "h": 270.9
  },
  "luminance": 0.0472
}

Semantic roles & 50–950 ramp

primary

#2428A8

secondary

#C4C163

accent

#E340E8

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #2428A8

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

Preview Lab → · Contrast checker → · Palette generator →