#283181#283181

#283181 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.8% C 0.134 H 272.8°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#283181
RGB	rgb(40, 49, 129)
HSL	hsl(234, 53%, 33%)
HSV	hsv(234, 69%, 51%)
CMYK	cmyk(69%, 62%, 0%, 49.4%)
CIE-LAB	lab(24.42, 24.11, -46.35)
CIE-LCH	lch(24.42, 52.24, 297.49°)
OKLab	oklab(35.8% 0.0064 -0.1335)
OKLCH	oklch(35.8% 0.134 272.8)
XYZ	xyz(5.9345, 4.2322, 21.2688)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283181 #817828

analogous

#285D81 #283181 #4B2881

triadic

#283181 #812831 #318128

tetradic

#283181 #81285D #817828 #28814B

square

#283181 #81285D #817828 #28814B

split-complementary

#283181 #814B28 #5D8128

monochromatic

#0B0E24 #1A1F52 #283181 #3643B0 #5864CB

Accessibility & contrast

On white

11.37

#283181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#283181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283181

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283181	#FFFFFF	#000000	##FFFFFF
##283181	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E84

Deuteranopia (green-blind)

#00367F

Tritanopia (blue-blind)

#004554

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283181;
/* rgb */ color: rgb(40, 49, 129);
/* oklch */ color: oklch(35.8% 0.134 272.8);

Tailwind

colors: {
  custom: {
    50: '#6e69a6',
    500: '#283181',
    950: '#000000',
  },
}

SCSS

$custom: #283181;
$custom-light: #6e69a6;
$custom-dark: #000000;

JSON

{
  "hex": "#283181",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 129
  },
  "hsl": {
    "h": 233.933,
    "s": 52.663,
    "l": 33.137
  },
  "oklch": {
    "l": 0.35803,
    "c": 0.1337,
    "h": 272.8
  },
  "luminance": 0.04233
}

Semantic roles & 50–950 ramp

primary

#283181

secondary

#B0A754

accent

#CD4CDC

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #283181

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

Preview Lab → · Contrast checker → · Palette generator →