#283783#283783

#283783 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.2% C 0.129 H 270.5°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#283783
RGB	rgb(40, 55, 131)
HSL	hsl(230, 53%, 34%)
HSV	hsv(230, 69%, 51%)
CMYK	cmyk(69.5%, 58%, 0%, 48.6%)
CIE-LAB	lab(26.22, 20.76, -44.68)
CIE-LCH	lch(26.22, 49.27, 294.92°)
OKLab	oklab(37.19% 0.0011 -0.1286)
OKLCH	oklch(37.19% 0.129 270.5)
XYZ	xyz(6.3366, 4.8216, 22.0651)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283783 #837428

analogous

#286483 #283783 #462883

triadic

#283783 #832837 #378328

tetradic

#283783 #832864 #837428 #288346

square

#283783 #832864 #837428 #288346

split-complementary

#283783 #834628 #648328

monochromatic

#0B1025 #1A2354 #283783 #364BB2 #596CCC

Accessibility & contrast

On white

10.69

#283783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#283783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283783

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283783	#FFFFFF	#000000	##FFFFFF
##283783	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004286

Deuteranopia (green-blind)

#003A81

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283783;
/* rgb */ color: rgb(40, 55, 131);
/* oklch */ color: oklch(37.2% 0.129 270.5);

Tailwind

colors: {
  custom: {
    50: '#6e6da8',
    500: '#283783',
    950: '#000000',
  },
}

SCSS

$custom: #283783;
$custom-light: #6e6da8;
$custom-dark: #000000;

JSON

{
  "hex": "#283783",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 131
  },
  "hsl": {
    "h": 230.11,
    "s": 53.216,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37191,
    "c": 0.12858,
    "h": 270.5
  },
  "luminance": 0.04822
}

Semantic roles & 50–950 ramp

primary

#283783

secondary

#B1A255

accent

#C54BDD

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283783

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

Preview Lab → · Contrast checker → · Palette generator →