#283161#283161

#283161 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.2% C 0.085 H 273.0°. Best body text is #FFFFFF at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#283161
RGB	rgb(40, 49, 97)
HSL	hsl(231, 42%, 27%)
HSV	hsv(231, 59%, 38%)
CMYK	cmyk(58.8%, 49.5%, 0%, 62%)
CIE-LAB	lab(21.98, 12.07, -29.78)
CIE-LCH	lch(21.98, 32.13, 292.07°)
OKLab	oklab(33.2% 0.0044 -0.0848)
OKLCH	oklch(33.2% 0.085 273)
XYZ	xyz(4.1304, 3.5105, 11.7669)
Luminance	0.0351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283161 #615828

analogous

#284E61 #283161 #3C2861

triadic

#283161 #612831 #316128

tetradic

#283161 #61284E #615828 #28613C

square

#283161 #61284E #615828 #28613C

split-complementary

#283161 #613C28 #4E6128

monochromatic

#090B16 #161B36 #283161 #3A478C #4E5EB6

Accessibility & contrast

On white

12.34

#283161 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#283161 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283161

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283161	#FFFFFF	#000000	##FFFFFF
##283161	1.00	12.34	1.70	12.34
#FFFFFF	12.34	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3763

Deuteranopia (green-blind)

#143260

Tritanopia (blue-blind)

#0A3C44

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #283161;
/* rgb */ color: rgb(40, 49, 97);
/* oklch */ color: oklch(33.2% 0.085 273.0);

Tailwind

colors: {
  custom: {
    50: '#67688e',
    500: '#283161',
    950: '#000000',
  },
}

SCSS

$custom: #283161;
$custom-light: #67688e;
$custom-dark: #000000;

JSON

{
  "hex": "#283161",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 97
  },
  "hsl": {
    "h": 230.526,
    "s": 41.606,
    "l": 26.863
  },
  "oklch": {
    "l": 0.33195,
    "c": 0.08494,
    "h": 273
  },
  "luminance": 0.03511
}

Semantic roles & 50–950 ramp

primary

#283161

secondary

#948951

accent

#BE56D1

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#06060C

muted

#7A7A7D

Preview Lab

Preview with #283161

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

Preview Lab → · Contrast checker → · Palette generator →