#283D84#283D84

#283D84 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.5% C 0.122 H 267.9°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#283D84
RGB	rgb(40, 61, 132)
HSL	hsl(226, 53%, 34%)
HSV	hsv(226, 70%, 52%)
CMYK	cmyk(69.7%, 53.8%, 0%, 48.2%)
CIE-LAB	lab(27.99, 17.00, -42.44)
CIE-LCH	lch(27.99, 45.72, 291.84°)
OKLab	oklab(38.55% -0.0045 -0.1219)
OKLCH	oklch(38.55% 0.122 267.9)
XYZ	xyz(6.7072, 5.4539, 22.5246)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D84 #846F28

analogous

#286B84 #283D84 #412884

triadic

#283D84 #84283D #3D8428

tetradic

#283D84 #84286B #846F28 #288441

square

#283D84 #84286B #846F28 #288441

split-complementary

#283D84 #844128 #6B8428

monochromatic

#0C1226 #1A2755 #283D84 #3653B3 #5A74CD

Accessibility & contrast

On white

10.04

#283D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#283D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D84

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D84	#FFFFFF	#000000	##FFFFFF
##283D84	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104687

Deuteranopia (green-blind)

#003E83

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #283d84;
/* rgb */ color: rgb(40, 61, 132);
/* oklch */ color: oklch(38.5% 0.122 267.9);

Tailwind

colors: {
  custom: {
    50: '#6e72a8',
    500: '#283d84',
    950: '#000000',
  },
}

SCSS

$custom: #283d84;
$custom-light: #6e72a8;
$custom-dark: #000000;

JSON

{
  "hex": "#283d84",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 132
  },
  "hsl": {
    "h": 226.304,
    "s": 53.488,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38548,
    "c": 0.12198,
    "h": 267.9
  },
  "luminance": 0.05455
}

Semantic roles & 50–950 ramp

primary

#283D84

secondary

#B29D56

accent

#BC4BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283D84

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

Preview Lab → · Contrast checker → · Palette generator →