#283391#283391

#283391 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.6% C 0.154 H 271.6°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#283391
RGB	rgb(40, 51, 145)
HSL	hsl(234, 57%, 36%)
HSV	hsv(234, 72%, 57%)
CMYK	cmyk(72.4%, 64.8%, 0%, 43.1%)
CIE-LAB	lab(26.34, 28.75, -53.18)
CIE-LCH	lch(26.34, 60.46, 298.40°)
OKLab	oklab(37.65% 0.0043 -0.1536)
OKLCH	oklch(37.65% 0.154 271.6)
XYZ	xyz(7.1680, 4.8624, 27.3433)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283391 #918628

analogous

#286891 #283391 #522891

triadic

#283391 #912833 #339128

tetradic

#283391 #912868 #918628 #289152

square

#283391 #912868 #918628 #289152

split-complementary

#283391 #915228 #689128

monochromatic

#0E1131 #1B2261 #283391 #3544C1 #606CD3

Accessibility & contrast

On white

10.65

#283391 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#283391 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283391

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283391	#FFFFFF	#000000	##FFFFFF
##283391	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004394

Deuteranopia (green-blind)

#003A8F

Tritanopia (blue-blind)

#004B5D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283391;
/* rgb */ color: rgb(40, 51, 145);
/* oklch */ color: oklch(37.6% 0.154 271.6);

Tailwind

colors: {
  custom: {
    50: '#716ab2',
    500: '#283391',
    950: '#000000',
  },
}

SCSS

$custom: #283391;
$custom-light: #716ab2;
$custom-dark: #000000;

JSON

{
  "hex": "#283391",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 145
  },
  "hsl": {
    "h": 233.714,
    "s": 56.757,
    "l": 36.275
  },
  "oklch": {
    "l": 0.37648,
    "c": 0.15365,
    "h": 271.6
  },
  "luminance": 0.04863
}

Semantic roles & 50–950 ramp

primary

#283391

secondary

#B9AF5C

accent

#D048E0

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #283391

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

Preview Lab → · Contrast checker → · Palette generator →