#0B123A#0B123A

#0B123A is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.6% C 0.078 H 270.5°. Best body text is #FFFFFF at 18.08:1 contrast (WCAG AA passes).

Color values

HEX	#0B123A
RGB	rgb(11, 18, 58)
HSL	hsl(231, 68%, 14%)
HSV	hsv(231, 81%, 23%)
CMYK	cmyk(81%, 69%, 0%, 77.3%)
CIE-LAB	lab(7.31, 13.24, -26.85)
CIE-LCH	lch(7.31, 29.93, 296.25°)
OKLab	oklab(20.59% 0.0006 -0.0775)
OKLCH	oklch(20.59% 0.078 270.5)
XYZ	xyz(1.1178, 0.8091, 4.0994)
Luminance	0.0081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B123A #3A330B

analogous

#0B293A #0B123A #1B0B3A

triadic

#0B123A #3A0B12 #123A0B

tetradic

#0B123A #3A0B29 #3A330B #0B3A1B

square

#0B123A #3A0B29 #3A330B #0B3A1B

split-complementary

#0B123A #3A1B0B #293A0B

monochromatic

#05081A #05081A #0B123A #15226D #1F32A1

Accessibility & contrast

On white

18.08

#0B123A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0B123A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B123A

18.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B123A	#FFFFFF	#000000	##FFFFFF
##0B123A	1.00	18.08	1.16	18.08
#FFFFFF	18.08	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183B

Deuteranopia (green-blind)

#001439

Tritanopia (blue-blind)

#001C23

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0b123a;
/* rgb */ color: rgb(11, 18, 58);
/* oklch */ color: oklch(20.6% 0.078 270.5);

Tailwind

colors: {
  custom: {
    50: '#524f70',
    500: '#0b123a',
    950: '#000000',
  },
}

SCSS

$custom: #0b123a;
$custom-light: #524f70;
$custom-dark: #000000;

JSON

{
  "hex": "#0b123a",
  "rgb": {
    "r": 11,
    "g": 18,
    "b": 58
  },
  "hsl": {
    "h": 231.064,
    "s": 68.116,
    "l": 13.529
  },
  "oklch": {
    "l": 0.20594,
    "c": 0.07752,
    "h": 270.5
  },
  "luminance": 0.00809
}

Semantic roles & 50–950 ramp

primary

#0B123A

secondary

#776B2A

accent

#D13DEB

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #0B123A

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

Preview Lab → · Contrast checker → · Palette generator →