#283373#283373

#283373 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 35.0% C 0.110 H 272.1°. Best body text is #FFFFFF at 11.59:1 contrast (WCAG AA passes).

Color values

HEX	#283373
RGB	rgb(40, 51, 115)
HSL	hsl(231, 48%, 30%)
HSV	hsv(231, 65%, 45%)
CMYK	cmyk(65.2%, 55.7%, 0%, 54.9%)
CIE-LAB	lab(23.86, 17.44, -38.40)
CIE-LCH	lch(23.86, 42.17, 294.42°)
OKLab	oklab(35.03% 0.0041 -0.1102)
OKLCH	oklch(35.03% 0.11 272.1)
XYZ	xyz(5.1524, 4.0561, 16.7277)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283373 #736828

analogous

#285873 #283373 #422873

triadic

#283373 #732833 #337328

tetradic

#283373 #732858 #736828 #287342

square

#283373 #732858 #736828 #287342

split-complementary

#283373 #734228 #587328

monochromatic

#080B18 #181F46 #283373 #3847A0 #5263C3

Accessibility & contrast

On white

11.59

#283373 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#283373 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283373

11.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283373	#FFFFFF	#000000	##FFFFFF
##283373	1.00	11.59	1.81	11.59
#FFFFFF	11.59	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A3C75

Deuteranopia (green-blind)

#003672

Tritanopia (blue-blind)

#00424D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #283373;
/* rgb */ color: rgb(40, 51, 115);
/* oklch */ color: oklch(35.0% 0.110 272.1);

Tailwind

colors: {
  custom: {
    50: '#6b6a9c',
    500: '#283373',
    950: '#000000',
  },
}

SCSS

$custom: #283373;
$custom-light: #6b6a9c;
$custom-dark: #000000;

JSON

{
  "hex": "#283373",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 115
  },
  "hsl": {
    "h": 231.2,
    "s": 48.387,
    "l": 30.392
  },
  "oklch": {
    "l": 0.35025,
    "c": 0.11024,
    "h": 272.1
  },
  "luminance": 0.04057
}

Semantic roles & 50–950 ramp

primary

#283373

secondary

#A59952

accent

#C450D8

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #283373

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

Preview Lab → · Contrast checker → · Palette generator →