#283166#283166

#283166 is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.6% C 0.093 H 273.1°. Best body text is #FFFFFF at 12.20:1 contrast (WCAG AA passes).

Color values

HEX	#283166
RGB	rgb(40, 49, 102)
HSL	hsl(231, 44%, 28%)
HSV	hsv(231, 61%, 40%)
CMYK	cmyk(60.8%, 52%, 0%, 60%)
CIE-LAB	lab(22.33, 13.94, -32.49)
CIE-LCH	lch(22.33, 35.35, 293.22°)
OKLab	oklab(33.57% 0.0051 -0.0928)
OKLCH	oklch(33.57% 0.093 273.1)
XYZ	xyz(4.3709, 3.6067, 13.0336)
Luminance	0.0361 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283166 #665D28

analogous

#285066 #283166 #3E2866

triadic

#283166 #662831 #316628

tetradic

#283166 #662850 #665D28 #28663E

square

#283166 #662850 #665D28 #28663E

split-complementary

#283166 #663E28 #506628

monochromatic

#090B16 #171C3A #283166 #394692 #4F5EBA

Accessibility & contrast

On white

12.20

#283166 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#283166 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283166

12.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283166	#FFFFFF	#000000	##FFFFFF
##283166	1.00	12.20	1.72	12.20
#FFFFFF	12.20	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#173868

Deuteranopia (green-blind)

#0D3365

Tritanopia (blue-blind)

#023D46

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #283166;
/* rgb */ color: rgb(40, 49, 102);
/* oklch */ color: oklch(33.6% 0.093 273.1);

Tailwind

colors: {
  custom: {
    50: '#686892',
    500: '#283166',
    950: '#000000',
  },
}

SCSS

$custom: #283166;
$custom-light: #686892;
$custom-dark: #000000;

JSON

{
  "hex": "#283166",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 102
  },
  "hsl": {
    "h": 231.29,
    "s": 43.662,
    "l": 27.843
  },
  "oklch": {
    "l": 0.33567,
    "c": 0.09293,
    "h": 273.1
  },
  "luminance": 0.03607
}

Semantic roles & 50–950 ramp

primary

#283166

secondary

#998E51

accent

#C154D3

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #283166

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

Preview Lab → · Contrast checker → · Palette generator →