#283291#283291

#283291 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.5% C 0.155 H 271.8°. Best body text is #FFFFFF at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#283291
RGB	rgb(40, 50, 145)
HSL	hsl(234, 57%, 36%)
HSV	hsv(234, 72%, 57%)
CMYK	cmyk(72.4%, 65.5%, 0%, 43.1%)
CIE-LAB	lab(26.09, 29.41, -53.60)
CIE-LCH	lch(26.09, 61.14, 298.76°)
OKLab	oklab(37.46% 0.005 -0.1548)
OKLCH	oklch(37.46% 0.155 271.8)
XYZ	xyz(7.1248, 4.7759, 27.3289)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283291 #918728

analogous

#286791 #283291 #532891

triadic

#283291 #912832 #329128

tetradic

#283291 #912867 #918728 #289153

square

#283291 #912867 #918728 #289153

split-complementary

#283291 #915328 #679128

monochromatic

#0E1131 #1B2161 #283291 #3543C1 #606BD3

Accessibility & contrast

On white

10.74

#283291 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#283291 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283291

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283291	#FFFFFF	#000000	##FFFFFF
##283291	1.00	10.74	1.96	10.74
#FFFFFF	10.74	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004394

Deuteranopia (green-blind)

#00398F

Tritanopia (blue-blind)

#004B5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283291;
/* rgb */ color: rgb(40, 50, 145);
/* oklch */ color: oklch(37.5% 0.155 271.8);

Tailwind

colors: {
  custom: {
    50: '#716ab2',
    500: '#283291',
    950: '#000000',
  },
}

SCSS

$custom: #283291;
$custom-light: #716ab2;
$custom-dark: #000000;

JSON

{
  "hex": "#283291",
  "rgb": {
    "r": 40,
    "g": 50,
    "b": 145
  },
  "hsl": {
    "h": 234.286,
    "s": 56.757,
    "l": 36.275
  },
  "oklch": {
    "l": 0.37463,
    "c": 0.15489,
    "h": 271.8
  },
  "luminance": 0.04777
}

Semantic roles & 50–950 ramp

primary

#283291

secondary

#B9B05C

accent

#D248E0

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #283291

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

Preview Lab → · Contrast checker → · Palette generator →