#283398#283398

#283398 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.3% C 0.163 H 271.3°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#283398
RGB	rgb(40, 51, 152)
HSL	hsl(234, 58%, 38%)
HSV	hsv(234, 74%, 60%)
CMYK	cmyk(73.7%, 66.4%, 0%, 40.4%)
CIE-LAB	lab(26.98, 31.34, -56.44)
CIE-LCH	lch(26.98, 64.56, 299.04°)
OKLab	oklab(38.31% 0.0038 -0.1631)
OKLCH	oklch(38.31% 0.163 271.3)
XYZ	xyz(7.7245, 5.0850, 30.2741)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283398 #988D28

analogous

#286B98 #283398 #552898

triadic

#283398 #982833 #339828

tetradic

#283398 #98286B #988D28 #289855

square

#283398 #98286B #988D28 #289855

split-complementary

#283398 #985528 #6B9828

monochromatic

#0F1237 #1B2368 #283398 #3543C8 #646FD6

Accessibility & contrast

On white

10.41

#283398 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#283398 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283398

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283398	#FFFFFF	#000000	##FFFFFF
##283398	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459B

Deuteranopia (green-blind)

#003B96

Tritanopia (blue-blind)

#004E61

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283398;
/* rgb */ color: rgb(40, 51, 152);
/* oklch */ color: oklch(38.3% 0.163 271.3);

Tailwind

colors: {
  custom: {
    50: '#736bb7',
    500: '#283398',
    950: '#000000',
  },
}

SCSS

$custom: #283398;
$custom-light: #736bb7;
$custom-dark: #000000;

JSON

{
  "hex": "#283398",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 152
  },
  "hsl": {
    "h": 234.107,
    "s": 58.333,
    "l": 37.647
  },
  "oklch": {
    "l": 0.3831,
    "c": 0.16318,
    "h": 271.3
  },
  "luminance": 0.05086
}

Semantic roles & 50–950 ramp

primary

#283398

secondary

#BCB360

accent

#D246E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #283398

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

Preview Lab → · Contrast checker → · Palette generator →