#283988#283988

#283988 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.133 H 269.8°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#283988
RGB	rgb(40, 57, 136)
HSL	hsl(229, 55%, 35%)
HSV	hsv(229, 71%, 53%)
CMYK	cmyk(70.6%, 58.1%, 0%, 46.7%)
CIE-LAB	lab(27.17, 21.29, -46.26)
CIE-LCH	lch(27.17, 50.92, 294.72°)
OKLab	oklab(38.03% -0.0006 -0.1332)
OKLCH	oklch(38.03% 0.133 269.8)
XYZ	xyz(6.7806, 5.1543, 23.9253)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283988 #887728

analogous

#286988 #283988 #472888

triadic

#283988 #882839 #398828

tetradic

#283988 #882869 #887728 #288847

square

#283988 #882869 #887728 #288847

split-complementary

#283988 #884728 #698828

monochromatic

#0C1129 #1A2559 #283988 #364DB7 #5B70CF

Accessibility & contrast

On white

10.34

#283988 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#283988 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283988

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283988	#FFFFFF	#000000	##FFFFFF
##283988	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458B

Deuteranopia (green-blind)

#003C86

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283988;
/* rgb */ color: rgb(40, 57, 136);
/* oklch */ color: oklch(38.0% 0.133 269.8);

Tailwind

colors: {
  custom: {
    50: '#6f6fab',
    500: '#283988',
    950: '#000000',
  },
}

SCSS

$custom: #283988;
$custom-light: #6f6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#283988",
  "rgb": {
    "r": 40,
    "g": 57,
    "b": 136
  },
  "hsl": {
    "h": 229.375,
    "s": 54.545,
    "l": 34.51
  },
  "oklch": {
    "l": 0.38027,
    "c": 0.13319,
    "h": 269.8
  },
  "luminance": 0.05155
}

Semantic roles & 50–950 ramp

primary

#283988

secondary

#B4A458

accent

#C44ADE

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283988

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

Preview Lab → · Contrast checker → · Palette generator →