#283378#283378

#283378 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.4% C 0.118 H 272.1°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#283378
RGB	rgb(40, 51, 120)
HSL	hsl(232, 50%, 31%)
HSV	hsv(232, 67%, 47%)
CMYK	cmyk(66.7%, 57.5%, 0%, 52.9%)
CIE-LAB	lab(24.24, 19.33, -40.96)
CIE-LCH	lch(24.24, 45.30, 295.27°)
OKLab	oklab(35.44% 0.0044 -0.1177)
OKLCH	oklch(35.44% 0.118 272.1)
XYZ	xyz(5.4479, 4.1744, 18.2843)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283378 #786D28

analogous

#285B78 #283378 #452878

triadic

#283378 #782833 #337828

tetradic

#283378 #78285B #786D28 #287845

square

#283378 #78285B #786D28 #287845

split-complementary

#283378 #784528 #5B7828

monochromatic

#090C1C #191F4A #283378 #3747A6 #5464C6

Accessibility & contrast

On white

11.44

#283378 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#283378 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283378

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283378	#FFFFFF	#000000	##FFFFFF
##283378	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7A

Deuteranopia (green-blind)

#003677

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283378;
/* rgb */ color: rgb(40, 51, 120);
/* oklch */ color: oklch(35.4% 0.118 272.1);

Tailwind

colors: {
  custom: {
    50: '#6c6a9f',
    500: '#283378',
    950: '#000000',
  },
}

SCSS

$custom: #283378;
$custom-light: #6c6a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#283378",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 120
  },
  "hsl": {
    "h": 231.75,
    "s": 50,
    "l": 31.373
  },
  "oklch": {
    "l": 0.35435,
    "c": 0.11778,
    "h": 272.1
  },
  "luminance": 0.04175
}

Semantic roles & 50–950 ramp

primary

#283378

secondary

#AA9E52

accent

#C64EDA

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #283378

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

Preview Lab → · Contrast checker → · Palette generator →