#282B8B#282B8B

#282B8B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.6% C 0.155 H 273.9°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#282B8B
RGB	rgb(40, 43, 139)
HSL	hsl(238, 55%, 35%)
HSV	hsv(238, 71%, 55%)
CMYK	cmyk(71.2%, 69.1%, 0%, 45.5%)
CIE-LAB	lab(23.81, 31.79, -53.61)
CIE-LCH	lch(23.81, 62.32, 300.67°)
OKLab	oklab(35.63% 0.0105 -0.1549)
OKLCH	oklch(35.63% 0.155 273.9)
XYZ	xyz(6.3976, 4.0423, 24.8642)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#282B8B #8B8828

analogous

#285C8B #282B8B #57288B

triadic

#282B8B #8B282B #2B8B28

tetradic

#282B8B #8B285C #8B8828 #288B57

square

#282B8B #8B285C #8B8828 #288B57

split-complementary

#282B8B #8B5728 #5C8B28

monochromatic

#0D0E2C #1A1C5B #282B8B #363ABB #5D61D0

Accessibility & contrast

On white

11.61

#282B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#282B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #282B8B

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##282B8B	#FFFFFF	#000000	##FFFFFF
##282B8B	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8E

Deuteranopia (green-blind)

#003489

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #282b8b;
/* rgb */ color: rgb(40, 43, 139);
/* oklch */ color: oklch(35.6% 0.155 273.9);

Tailwind

colors: {
  custom: {
    50: '#7165ae',
    500: '#282b8b',
    950: '#000000',
  },
}

SCSS

$custom: #282b8b;
$custom-light: #7165ae;
$custom-dark: #000000;

JSON

{
  "hex": "#282b8b",
  "rgb": {
    "r": 40,
    "g": 43,
    "b": 139
  },
  "hsl": {
    "h": 238.182,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.35632,
    "c": 0.15524,
    "h": 273.9
  },
  "luminance": 0.04043
}

Semantic roles & 50–950 ramp

primary

#282B8B

secondary

#B6B359

accent

#DA49DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090510

muted

#7B7A7F

Preview Lab

Preview with #282B8B

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

Preview Lab → · Contrast checker → · Palette generator →