#283D86#283D86

#283D86 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.125 H 268.0°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#283D86
RGB	rgb(40, 61, 134)
HSL	hsl(227, 54%, 34%)
HSV	hsv(227, 70%, 53%)
CMYK	cmyk(70.1%, 54.5%, 0%, 47.5%)
CIE-LAB	lab(28.14, 17.78, -43.44)
CIE-LCH	lch(28.14, 46.94, 292.25°)
OKLab	oklab(38.71% -0.0043 -0.1249)
OKLCH	oklch(38.71% 0.125 268)
XYZ	xyz(6.8454, 5.5092, 23.2523)
Luminance	0.0551 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D86 #867128

analogous

#286C86 #283D86 #422886

triadic

#283D86 #86283D #3D8628

tetradic

#283D86 #86286C #867128 #288642

square

#283D86 #86286C #867128 #288642

split-complementary

#283D86 #864228 #6C8628

monochromatic

#0C1228 #1A2857 #283D86 #3652B5 #5B74CE

Accessibility & contrast

On white

9.99

#283D86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#283D86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D86

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D86	#FFFFFF	#000000	##FFFFFF
##283D86	1.00	9.99	2.10	9.99
#FFFFFF	9.99	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4789

Deuteranopia (green-blind)

#003E85

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #283d86;
/* rgb */ color: rgb(40, 61, 134);
/* oklch */ color: oklch(38.7% 0.125 268.0);

Tailwind

colors: {
  custom: {
    50: '#6e72aa',
    500: '#283d86',
    950: '#000000',
  },
}

SCSS

$custom: #283d86;
$custom-light: #6e72aa;
$custom-dark: #000000;

JSON

{
  "hex": "#283d86",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 134
  },
  "hsl": {
    "h": 226.596,
    "s": 54.023,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38707,
    "c": 0.12494,
    "h": 268
  },
  "luminance": 0.0551
}

Semantic roles & 50–950 ramp

primary

#283D86

secondary

#B39E57

accent

#BD4ADD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283D86

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

Preview Lab → · Contrast checker → · Palette generator →