#283289#283289

#283289 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.7% C 0.144 H 272.1°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#283289
RGB	rgb(40, 50, 137)
HSL	hsl(234, 55%, 35%)
HSV	hsv(234, 71%, 54%)
CMYK	cmyk(70.8%, 63.5%, 0%, 46.3%)
CIE-LAB	lab(25.38, 26.44, -49.80)
CIE-LCH	lch(25.38, 56.38, 297.96°)
OKLab	oklab(36.72% 0.0054 -0.1437)
OKLCH	oklch(36.72% 0.144 272.1)
XYZ	xyz(6.5295, 4.5378, 24.1938)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283289 #897F28

analogous

#286389 #283289 #4E2889

triadic

#283289 #892832 #328928

tetradic

#283289 #892863 #897F28 #28894E

square

#283289 #892863 #897F28 #28894E

split-complementary

#283289 #894E28 #638928

monochromatic

#0C0F2A #1A215A #283289 #3643B8 #5C68CF

Accessibility & contrast

On white

11.01

#283289 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#283289 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283289

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283289	#FFFFFF	#000000	##FFFFFF
##283289	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418C

Deuteranopia (green-blind)

#003887

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283289;
/* rgb */ color: rgb(40, 50, 137);
/* oklch */ color: oklch(36.7% 0.144 272.1);

Tailwind

colors: {
  custom: {
    50: '#706aac',
    500: '#283289',
    950: '#000000',
  },
}

SCSS

$custom: #283289;
$custom-light: #706aac;
$custom-dark: #000000;

JSON

{
  "hex": "#283289",
  "rgb": {
    "r": 40,
    "g": 50,
    "b": 137
  },
  "hsl": {
    "h": 233.814,
    "s": 54.802,
    "l": 34.706
  },
  "oklch": {
    "l": 0.3672,
    "c": 0.14378,
    "h": 272.1
  },
  "luminance": 0.04538
}

Semantic roles & 50–950 ramp

primary

#283289

secondary

#B5AB58

accent

#CF4ADE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #283289

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

Preview Lab → · Contrast checker → · Palette generator →