#283191#283191

#283191 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.3% C 0.156 H 272.1°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#283191
RGB	rgb(40, 49, 145)
HSL	hsl(235, 57%, 36%)
HSV	hsv(235, 72%, 57%)
CMYK	cmyk(72.4%, 66.2%, 0%, 43.1%)
CIE-LAB	lab(25.84, 30.07, -54.00)
CIE-LCH	lch(25.84, 61.81, 299.11°)
OKLab	oklab(37.28% 0.0057 -0.156)
OKLCH	oklch(37.28% 0.156 272.1)
XYZ	xyz(7.0825, 4.6914, 27.3148)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283191 #918828

analogous

#286691 #283191 #542891

triadic

#283191 #912831 #319128

tetradic

#283191 #912866 #918828 #289154

square

#283191 #912866 #918828 #289154

split-complementary

#283191 #915428 #669128

monochromatic

#0E1131 #1B2161 #283191 #3541C1 #606AD3

Accessibility & contrast

On white

10.83

#283191 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#283191 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283191

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283191	#FFFFFF	#000000	##FFFFFF
##283191	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004294

Deuteranopia (green-blind)

#00388F

Tritanopia (blue-blind)

#004A5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283191;
/* rgb */ color: rgb(40, 49, 145);
/* oklch */ color: oklch(37.3% 0.156 272.1);

Tailwind

colors: {
  custom: {
    50: '#7269b2',
    500: '#283191',
    950: '#000000',
  },
}

SCSS

$custom: #283191;
$custom-light: #7269b2;
$custom-dark: #000000;

JSON

{
  "hex": "#283191",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 145
  },
  "hsl": {
    "h": 234.857,
    "s": 56.757,
    "l": 36.275
  },
  "oklch": {
    "l": 0.3728,
    "c": 0.15612,
    "h": 272.1
  },
  "luminance": 0.04692
}

Semantic roles & 50–950 ramp

primary

#283191

secondary

#B9B15C

accent

#D348E0

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #283191

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

Preview Lab → · Contrast checker → · Palette generator →