#282D8A#282D8A

#282D8A is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.9% C 0.151 H 273.5°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#282D8A
RGB	rgb(40, 45, 138)
HSL	hsl(237, 55%, 35%)
HSV	hsv(237, 71%, 54%)
CMYK	cmyk(71%, 67.4%, 0%, 45.9%)
CIE-LAB	lab(24.20, 30.13, -52.34)
CIE-LCH	lch(24.20, 60.40, 299.92°)
OKLab	oklab(35.89% 0.0092 -0.1512)
OKLCH	oklch(35.89% 0.151 273.5)
XYZ	xyz(6.3994, 4.1623, 24.5060)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#282D8A #8A8528

analogous

#285E8A #282D8A #54288A

triadic

#282D8A #8A282D #2D8A28

tetradic

#282D8A #8A285E #8A8528 #288A54

square

#282D8A #8A285E #8A8528 #288A54

split-complementary

#282D8A #8A5428 #5E8A28

monochromatic

#0C0E2B #1A1E5B #282D8A #363CB9 #5D62D0

Accessibility & contrast

On white

11.46

#282D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#282D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #282D8A

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##282D8A	#FFFFFF	#000000	##FFFFFF
##282D8A	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8D

Deuteranopia (green-blind)

#003588

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #282d8a;
/* rgb */ color: rgb(40, 45, 138);
/* oklch */ color: oklch(35.9% 0.151 273.5);

Tailwind

colors: {
  custom: {
    50: '#7066ad',
    500: '#282d8a',
    950: '#000000',
  },
}

SCSS

$custom: #282d8a;
$custom-light: #7066ad;
$custom-dark: #000000;

JSON

{
  "hex": "#282d8a",
  "rgb": {
    "r": 40,
    "g": 45,
    "b": 138
  },
  "hsl": {
    "h": 236.939,
    "s": 55.056,
    "l": 34.902
  },
  "oklch": {
    "l": 0.35887,
    "c": 0.15146,
    "h": 273.5
  },
  "luminance": 0.04163
}

Semantic roles & 50–950 ramp

primary

#282D8A

secondary

#B5B059

accent

#D749DE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #282D8A

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

Preview Lab → · Contrast checker → · Palette generator →