#282D8B#282D8B

#282D8B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.0% C 0.153 H 273.4°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#282D8B
RGB	rgb(40, 45, 139)
HSL	hsl(237, 55%, 35%)
HSV	hsv(237, 71%, 55%)
CMYK	cmyk(71.2%, 67.6%, 0%, 45.5%)
CIE-LAB	lab(24.29, 30.49, -52.81)
CIE-LCH	lch(24.29, 60.98, 300.00°)
OKLab	oklab(35.98% 0.0091 -0.1525)
OKLCH	oklch(35.98% 0.153 273.4)
XYZ	xyz(6.4721, 4.1914, 24.8890)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#282D8B #8B8628

analogous

#285E8B #282D8B #55288B

triadic

#282D8B #8B282D #2D8B28

tetradic

#282D8B #8B285E #8B8628 #288B55

square

#282D8B #8B285E #8B8628 #288B55

split-complementary

#282D8B #8B5528 #5E8B28

monochromatic

#0D0E2C #1A1E5B #282D8B #363CBB #5D63D0

Accessibility & contrast

On white

11.42

#282D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#282D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #282D8B

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##282D8B	#FFFFFF	#000000	##FFFFFF
##282D8B	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003589

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #282d8b;
/* rgb */ color: rgb(40, 45, 139);
/* oklch */ color: oklch(36.0% 0.153 273.4);

Tailwind

colors: {
  custom: {
    50: '#7066ae',
    500: '#282d8b',
    950: '#000000',
  },
}

SCSS

$custom: #282d8b;
$custom-light: #7066ae;
$custom-dark: #000000;

JSON

{
  "hex": "#282d8b",
  "rgb": {
    "r": 40,
    "g": 45,
    "b": 139
  },
  "hsl": {
    "h": 236.97,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.35983,
    "c": 0.15282,
    "h": 273.4
  },
  "luminance": 0.04192
}

Semantic roles & 50–950 ramp

primary

#282D8B

secondary

#B6B159

accent

#D749DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #282D8B

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

Preview Lab → · Contrast checker → · Palette generator →