#283173#283173

#283173 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.6% C 0.113 H 273.1°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#283173
RGB	rgb(40, 49, 115)
HSL	hsl(233, 48%, 30%)
HSV	hsv(233, 65%, 45%)
CMYK	cmyk(65.2%, 57.4%, 0%, 54.9%)
CIE-LAB	lab(23.29, 18.83, -39.32)
CIE-LCH	lch(23.29, 43.60, 295.60°)
OKLab	oklab(34.6% 0.0062 -0.1129)
OKLCH	oklch(34.6% 0.113 273.1)
XYZ	xyz(5.0669, 3.8851, 16.6992)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283173 #736A28

analogous

#285673 #283173 #442873

triadic

#283173 #732831 #317328

tetradic

#283173 #732856 #736A28 #287344

square

#283173 #732856 #736A28 #287344

split-complementary

#283173 #734428 #567328

monochromatic

#080A18 #181E46 #283173 #3844A0 #5260C3

Accessibility & contrast

On white

11.82

#283173 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#283173 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283173

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283173	#FFFFFF	#000000	##FFFFFF
##283173	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#013B75

Deuteranopia (green-blind)

#003472

Tritanopia (blue-blind)

#00414D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #283173;
/* rgb */ color: rgb(40, 49, 115);
/* oklch */ color: oklch(34.6% 0.113 273.1);

Tailwind

colors: {
  custom: {
    50: '#6b689c',
    500: '#283173',
    950: '#000000',
  },
}

SCSS

$custom: #283173;
$custom-light: #6b689c;
$custom-dark: #000000;

JSON

{
  "hex": "#283173",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 115
  },
  "hsl": {
    "h": 232.8,
    "s": 48.387,
    "l": 30.392
  },
  "oklch": {
    "l": 0.34599,
    "c": 0.11305,
    "h": 273.1
  },
  "luminance": 0.03886
}

Semantic roles & 50–950 ramp

primary

#283173

secondary

#A59B52

accent

#C850D8

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #283173

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

Preview Lab → · Contrast checker → · Palette generator →