#0B183C#0B183C

#0B183C is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.2% C 0.072 H 265.8°. Best body text is #FFFFFF at 17.35:1 contrast (WCAG AA passes).

Color values

HEX	#0B183C
RGB	rgb(11, 24, 60)
HSL	hsl(224, 69%, 14%)
HSV	hsv(224, 82%, 24%)
CMYK	cmyk(81.7%, 60%, 0%, 76.5%)
CIE-LAB	lab(9.41, 9.45, -24.88)
CIE-LCH	lch(9.41, 26.61, 290.80°)
OKLab	oklab(22.24% -0.0052 -0.0715)
OKLCH	oklch(22.24% 0.072 265.8)
XYZ	xyz(1.2800, 1.0505, 4.4094)
Luminance	0.0105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B183C #3C2F0B

analogous

#0B313C #0B183C #170B3C

triadic

#0B183C #3C0B18 #183C0B

tetradic

#0B183C #3C0B31 #3C2F0B #0B3C17

square

#0B183C #3C0B31 #3C2F0B #0B3C17

split-complementary

#0B183C #3C170B #313C0B

monochromatic

#050A1A #050A1A #0B183C #142D70 #1E41A3

Accessibility & contrast

On white

17.35

#0B183C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0B183C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B183C

17.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B183C	#FFFFFF	#000000	##FFFFFF
##0B183C	1.00	17.35	1.21	17.35
#FFFFFF	17.35	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#031D3D

Deuteranopia (green-blind)

#00183B

Tritanopia (blue-blind)

#002127

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0b183c;
/* rgb */ color: rgb(11, 24, 60);
/* oklch */ color: oklch(22.2% 0.072 265.8);

Tailwind

colors: {
  custom: {
    50: '#525472',
    500: '#0b183c',
    950: '#000000',
  },
}

SCSS

$custom: #0b183c;
$custom-light: #525472;
$custom-dark: #000000;

JSON

{
  "hex": "#0b183c",
  "rgb": {
    "r": 11,
    "g": 24,
    "b": 60
  },
  "hsl": {
    "h": 224.082,
    "s": 69.014,
    "l": 13.922
  },
  "oklch": {
    "l": 0.22241,
    "c": 0.07172,
    "h": 265.8
  },
  "luminance": 0.01051
}

Semantic roles & 50–950 ramp

primary

#0B183C

secondary

#79642A

accent

#BD3CEC

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #0B183C

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

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