#283183#283183

#283183 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.137 H 272.7°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#283183
RGB	rgb(40, 49, 131)
HSL	hsl(234, 53%, 34%)
HSV	hsv(234, 69%, 51%)
CMYK	cmyk(69.5%, 62.6%, 0%, 48.6%)
CIE-LAB	lab(24.59, 24.86, -47.33)
CIE-LCH	lch(24.59, 53.46, 297.72°)
OKLab	oklab(35.98% 0.0064 -0.1364)
OKLCH	oklch(35.98% 0.137 272.7)
XYZ	xyz(6.0687, 4.2859, 21.9758)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283183 #837A28

analogous

#285E83 #283183 #4C2883

triadic

#283183 #832831 #318328

tetradic

#283183 #83285E #837A28 #28834C

square

#283183 #83285E #837A28 #28834C

split-complementary

#283183 #834C28 #5E8328

monochromatic

#0B0E25 #1A1F54 #283183 #3643B2 #5964CC

Accessibility & contrast

On white

11.31

#283183 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#283183 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283183

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283183	#FFFFFF	#000000	##FFFFFF
##283183	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F86

Deuteranopia (green-blind)

#003681

Tritanopia (blue-blind)

#004655

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283183;
/* rgb */ color: rgb(40, 49, 131);
/* oklch */ color: oklch(36.0% 0.137 272.7);

Tailwind

colors: {
  custom: {
    50: '#6e69a8',
    500: '#283183',
    950: '#000000',
  },
}

SCSS

$custom: #283183;
$custom-light: #6e69a8;
$custom-dark: #000000;

JSON

{
  "hex": "#283183",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 131
  },
  "hsl": {
    "h": 234.066,
    "s": 53.216,
    "l": 33.529
  },
  "oklch": {
    "l": 0.35982,
    "c": 0.13658,
    "h": 272.7
  },
  "luminance": 0.04286
}

Semantic roles & 50–950 ramp

primary

#283183

secondary

#B1A855

accent

#CE4BDD

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #283183

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

Preview Lab → · Contrast checker → · Palette generator →