#0B0B3D#0B0B3D

#0B0B3D is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.5% C 0.092 H 273.8°. Best body text is #FFFFFF at 18.59:1 contrast (WCAG AA passes).

Color values

HEX	#0B0B3D
RGB	rgb(11, 11, 61)
HSL	hsl(240, 69%, 14%)
HSV	hsv(240, 82%, 24%)
CMYK	cmyk(82%, 82%, 0%, 76.1%)
CIE-LAB	lab(5.85, 18.92, -31.38)
CIE-LCH	lch(5.85, 36.65, 301.08°)
OKLab	oklab(19.48% 0.006 -0.0919)
OKLCH	oklch(19.48% 0.092 273.8)
XYZ	xyz(1.0997, 0.6473, 4.4810)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0B3D #3D3D0B

analogous

#0B243D #0B0B3D #240B3D

triadic

#0B0B3D #3D0B0B #0B3D0B

tetradic

#0B0B3D #3D0B24 #3D3D0B #0B3D24

square

#0B0B3D #3D0B24 #3D3D0B #0B3D24

split-complementary

#0B0B3D #3D240B #243D0B

monochromatic

#05051A #05051A #0B0B3D #141471 #1E1EA5

Accessibility & contrast

On white

18.59

#0B0B3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#0B0B3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0B3D

18.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0B3D	#FFFFFF	#000000	##FFFFFF
##0B0B3D	1.00	18.59	1.13	18.59
#FFFFFF	18.59	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00153E

Deuteranopia (green-blind)

#00113C

Tritanopia (blue-blind)

#001923

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #0b0b3d;
/* rgb */ color: rgb(11, 11, 61);
/* oklch */ color: oklch(19.5% 0.092 273.8);

Tailwind

colors: {
  custom: {
    50: '#534b73',
    500: '#0b0b3d',
    950: '#000000',
  },
}

SCSS

$custom: #0b0b3d;
$custom-light: #534b73;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0b3d",
  "rgb": {
    "r": 11,
    "g": 11,
    "b": 61
  },
  "hsl": {
    "h": 240,
    "s": 69.444,
    "l": 14.118
  },
  "oklch": {
    "l": 0.19476,
    "c": 0.0921,
    "h": 273.8
  },
  "luminance": 0.00647
}

Semantic roles & 50–950 ramp

primary

#0B0B3D

secondary

#7A7A2A

accent

#EC3CEC

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #0B0B3D

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

Preview Lab → · Contrast checker → · Palette generator →