#283699#283699

#283699 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.0% C 0.161 H 270.6°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#283699
RGB	rgb(40, 54, 153)
HSL	hsl(233, 59%, 38%)
HSV	hsv(233, 74%, 60%)
CMYK	cmyk(73.9%, 64.7%, 0%, 40%)
CIE-LAB	lab(27.81, 29.74, -55.68)
CIE-LCH	lch(27.81, 63.12, 298.11°)
OKLab	oklab(38.95% 0.0017 -0.1609)
OKLCH	oklch(38.95% 0.161 270.6)
XYZ	xyz(7.9420, 5.3885, 30.7523)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283699 #998B28

analogous

#286F99 #283699 #522899

triadic

#283699 #992836 #369928

tetradic

#283699 #99286F #998B28 #289952

square

#283699 #99286F #998B28 #289952

split-complementary

#283699 #995228 #6F9928

monochromatic

#0F1438 #1B2568 #283699 #3547CA #6573D7

Accessibility & contrast

On white

10.11

#283699 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#283699 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283699

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283699	#FFFFFF	#000000	##FFFFFF
##283699	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479C

Deuteranopia (green-blind)

#003C97

Tritanopia (blue-blind)

#005062

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #283699;
/* rgb */ color: rgb(40, 54, 153);
/* oklch */ color: oklch(39.0% 0.161 270.6);

Tailwind

colors: {
  custom: {
    50: '#736db8',
    500: '#283699',
    950: '#000000',
  },
}

SCSS

$custom: #283699;
$custom-light: #736db8;
$custom-dark: #000000;

JSON

{
  "hex": "#283699",
  "rgb": {
    "r": 40,
    "g": 54,
    "b": 153
  },
  "hsl": {
    "h": 232.566,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.38953,
    "c": 0.1609,
    "h": 270.6
  },
  "luminance": 0.05389
}

Semantic roles & 50–950 ramp

primary

#283699

secondary

#BDB160

accent

#CE46E2

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #283699

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

Preview Lab → · Contrast checker → · Palette generator →