#0B123B#0B123B

#0B123B is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.7% C 0.079 H 270.4°. Best body text is #FFFFFF at 18.04:1 contrast (WCAG AA passes).

Color values

HEX	#0B123B
RGB	rgb(11, 18, 59)
HSL	hsl(231, 69%, 14%)
HSV	hsv(231, 81%, 23%)
CMYK	cmyk(81.4%, 69.5%, 0%, 76.9%)
CIE-LAB	lab(7.40, 13.70, -27.41)
CIE-LCH	lch(7.40, 30.65, 296.55°)
OKLab	oklab(20.7% 0.0006 -0.0792)
OKLCH	oklch(20.7% 0.079 270.4)
XYZ	xyz(1.1435, 0.8194, 4.2347)
Luminance	0.0082 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B123B #3B340B

analogous

#0B2A3B #0B123B #1C0B3B

triadic

#0B123B #3B0B12 #123B0B

tetradic

#0B123B #3B0B2A #3B340B #0B3B1C

square

#0B123B #3B0B2A #3B340B #0B3B1C

split-complementary

#0B123B #3B1C0B #2A3B0B

monochromatic

#05081A #05081A #0B123B #15226F #1E31A2

Accessibility & contrast

On white

18.04

#0B123B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0B123B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B123B

18.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B123B	#FFFFFF	#000000	##FFFFFF
##0B123B	1.00	18.04	1.16	18.04
#FFFFFF	18.04	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193C

Deuteranopia (green-blind)

#00143A

Tritanopia (blue-blind)

#001C24

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0b123b;
/* rgb */ color: rgb(11, 18, 59);
/* oklch */ color: oklch(20.7% 0.079 270.4);

Tailwind

colors: {
  custom: {
    50: '#524f71',
    500: '#0b123b',
    950: '#000000',
  },
}

SCSS

$custom: #0b123b;
$custom-light: #524f71;
$custom-dark: #000000;

JSON

{
  "hex": "#0b123b",
  "rgb": {
    "r": 11,
    "g": 18,
    "b": 59
  },
  "hsl": {
    "h": 231.25,
    "s": 68.571,
    "l": 13.725
  },
  "oklch": {
    "l": 0.20698,
    "c": 0.07917,
    "h": 270.4
  },
  "luminance": 0.0082
}

Semantic roles & 50–950 ramp

primary

#0B123B

secondary

#786C2A

accent

#D23CEB

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #0B123B

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

Preview Lab → · Contrast checker → · Palette generator →