#283C86#283C86

#283C86 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.126 H 268.5°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#283C86
RGB	rgb(40, 60, 134)
HSL	hsl(227, 54%, 34%)
HSV	hsv(227, 70%, 53%)
CMYK	cmyk(70.1%, 55.2%, 0%, 47.5%)
CIE-LAB	lab(27.85, 18.46, -43.90)
CIE-LCH	lch(27.85, 47.63, 292.81°)
OKLab	oklab(38.49% -0.0034 -0.1262)
OKLCH	oklch(38.49% 0.126 268.5)
XYZ	xyz(6.7925, 5.4034, 23.2346)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C86 #867228

analogous

#286B86 #283C86 #432886

triadic

#283C86 #86283C #3C8628

tetradic

#283C86 #86286B #867228 #288643

square

#283C86 #86286B #867228 #288643

split-complementary

#283C86 #864328 #6B8628

monochromatic

#0C1228 #1A2757 #283C86 #3651B5 #5B73CE

Accessibility & contrast

On white

10.09

#283C86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#283C86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C86

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C86	#FFFFFF	#000000	##FFFFFF
##283C86	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064689

Deuteranopia (green-blind)

#003E85

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #283c86;
/* rgb */ color: rgb(40, 60, 134);
/* oklch */ color: oklch(38.5% 0.126 268.5);

Tailwind

colors: {
  custom: {
    50: '#6e71aa',
    500: '#283c86',
    950: '#000000',
  },
}

SCSS

$custom: #283c86;
$custom-light: #6e71aa;
$custom-dark: #000000;

JSON

{
  "hex": "#283c86",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 134
  },
  "hsl": {
    "h": 227.234,
    "s": 54.023,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38492,
    "c": 0.12627,
    "h": 268.5
  },
  "luminance": 0.05404
}

Semantic roles & 50–950 ramp

primary

#283C86

secondary

#B39F57

accent

#BE4ADD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283C86

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

Preview Lab → · Contrast checker → · Palette generator →