#283178#283178

#283178 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.0% C 0.121 H 273.0°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#283178
RGB	rgb(40, 49, 120)
HSL	hsl(233, 50%, 31%)
HSV	hsv(233, 67%, 47%)
CMYK	cmyk(66.7%, 59.2%, 0%, 52.9%)
CIE-LAB	lab(23.68, 20.72, -41.87)
CIE-LCH	lch(23.68, 46.71, 296.34°)
OKLab	oklab(35.02% 0.0064 -0.1204)
OKLCH	oklch(35.02% 0.121 273)
XYZ	xyz(5.3624, 4.0033, 18.2558)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283178 #786F28

analogous

#285978 #283178 #472878

triadic

#283178 #782831 #317828

tetradic

#283178 #782859 #786F28 #287847

square

#283178 #782859 #786F28 #287847

split-complementary

#283178 #784728 #597828

monochromatic

#090C1C #191E4A #283178 #3744A6 #5461C6

Accessibility & contrast

On white

11.66

#283178 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#283178 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283178

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283178	#FFFFFF	#000000	##FFFFFF
##283178	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7A

Deuteranopia (green-blind)

#003577

Tritanopia (blue-blind)

#00424F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #283178;
/* rgb */ color: rgb(40, 49, 120);
/* oklch */ color: oklch(35.0% 0.121 273.0);

Tailwind

colors: {
  custom: {
    50: '#6c69a0',
    500: '#283178',
    950: '#000000',
  },
}

SCSS

$custom: #283178;
$custom-light: #6c69a0;
$custom-dark: #000000;

JSON

{
  "hex": "#283178",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 120
  },
  "hsl": {
    "h": 233.25,
    "s": 50,
    "l": 31.373
  },
  "oklch": {
    "l": 0.35018,
    "c": 0.12055,
    "h": 273
  },
  "luminance": 0.04004
}

Semantic roles & 50–950 ramp

primary

#283178

secondary

#AAA052

accent

#CA4EDA

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #283178

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

Preview Lab → · Contrast checker → · Palette generator →