#0B0B4A#0B0B4A

#0B0B4A is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 21.1% C 0.111 H 271.7°. Best body text is #FFFFFF at 18.09:1 contrast (WCAG AA passes).

Color values

HEX	#0B0B4A
RGB	rgb(11, 11, 74)
HSL	hsl(240, 74%, 17%)
HSV	hsv(240, 85%, 29%)
CMYK	cmyk(85.1%, 85.1%, 0%, 71%)
CIE-LAB	lab(7.27, 24.93, -38.26)
CIE-LCH	lch(7.27, 45.67, 303.09°)
OKLab	oklab(21.11% 0.0033 -0.1109)
OKLCH	oklch(21.11% 0.111 271.7)
XYZ	xyz(1.4933, 0.8047, 6.5539)
Luminance	0.0080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0B4A #4A4A0B

analogous

#0B2B4A #0B0B4A #2B0B4A

triadic

#0B0B4A #4A0B0B #0B4A0B

tetradic

#0B0B4A #4A0B2B #4A4A0B #0B4A2B

square

#0B0B4A #4A0B2B #4A4A0B #0B4A2B

split-complementary

#0B0B4A #4A2B0B #2B4A0B

monochromatic

#04041B #04041B #0B0B4A #13137F #1B1BB5

Accessibility & contrast

On white

18.09

#0B0B4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0B0B4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0B4A

18.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0B4A	#FFFFFF	#000000	##FFFFFF
##0B0B4A	1.00	18.09	1.16	18.09
#FFFFFF	18.09	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00194C

Deuteranopia (green-blind)

#001349

Tritanopia (blue-blind)

#001E2A

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0b0b4a;
/* rgb */ color: rgb(11, 11, 74);
/* oklch */ color: oklch(21.1% 0.111 271.7);

Tailwind

colors: {
  custom: {
    50: '#584b7d',
    500: '#0b0b4a',
    950: '#000000',
  },
}

SCSS

$custom: #0b0b4a;
$custom-light: #584b7d;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0b4a",
  "rgb": {
    "r": 11,
    "g": 11,
    "b": 74
  },
  "hsl": {
    "h": 240,
    "s": 74.118,
    "l": 16.667
  },
  "oklch": {
    "l": 0.21113,
    "c": 0.11093,
    "h": 271.7
  },
  "luminance": 0.00805
}

Semantic roles & 50–950 ramp

primary

#0B0B4A

secondary

#86862B

accent

#F137F1

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #0B0B4A

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

Preview Lab → · Contrast checker → · Palette generator →