#0B181F#0B181F

#0B181F is a very dark, muted cyan. Relative luminance 0.008; OKLCH L 20.1% C 0.023 H 233.1°. Best body text is #FFFFFF at 18.03:1 contrast (WCAG AA passes).

Color values

HEX	#0B181F
RGB	rgb(11, 24, 31)
HSL	hsl(201, 48%, 8%)
HSV	hsv(201, 65%, 12%)
CMYK	cmyk(64.5%, 22.6%, 0%, 87.8%)
CIE-LAB	lab(7.44, -2.89, -6.64)
CIE-LCH	lch(7.44, 7.24, 246.46°)
OKLab	oklab(20.06% -0.0139 -0.0185)
OKLCH	oklch(20.06% 0.023 233.1)
XYZ	xyz(0.7119, 0.8233, 1.4175)
Luminance	0.0082 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B181F #1F120B

analogous

#0B1F1C #0B181F #0B0E1F

triadic

#0B181F #1F0B18 #181F0B

tetradic

#0B181F #1C0B1F #1F120B #0E1F0B

square

#0B181F #1C0B1F #1F120B #0E1F0B

split-complementary

#0B181F #1F0B0E #1F1C0B

monochromatic

#081117 #081117 #0B181F #1B3B4C #2B5E79

Accessibility & contrast

On white

18.03

#0B181F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0B181F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B181F

18.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B181F	#FFFFFF	#000000	##FFFFFF
##0B181F	1.00	18.03	1.16	18.03
#FFFFFF	18.03	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15181F

Deuteranopia (green-blind)

#12151F

Tritanopia (blue-blind)

#031A1A

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0b181f;
/* rgb */ color: rgb(11, 24, 31);
/* oklch */ color: oklch(20.1% 0.023 233.1);

Tailwind

colors: {
  custom: {
    50: '#4b545a',
    500: '#0b181f',
    950: '#000000',
  },
}

SCSS

$custom: #0b181f;
$custom-light: #4b545a;
$custom-dark: #000000;

JSON

{
  "hex": "#0b181f",
  "rgb": {
    "r": 11,
    "g": 24,
    "b": 31
  },
  "hsl": {
    "h": 201,
    "s": 47.619,
    "l": 8.235
  },
  "oklch": {
    "l": 0.20062,
    "c": 0.0231,
    "h": 233.1
  },
  "luminance": 0.00823
}

Semantic roles & 50–950 ramp

primary

#0B181F

secondary

#593C2D

accent

#8051D7

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010203

muted

#777878

Preview Lab

Preview with #0B181F

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

Preview Lab → · Contrast checker → · Palette generator →