#0C182B#0C182B

#0C182B is a very dark, muted blue. Relative luminance 0.009; OKLCH L 20.9% C 0.042 H 259.2°. Best body text is #FFFFFF at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#0C182B
RGB	rgb(12, 24, 43)
HSL	hsl(217, 56%, 11%)
HSV	hsv(217, 72%, 17%)
CMYK	cmyk(72.1%, 44.2%, 0%, 83.1%)
CIE-LAB	lab(8.18, 2.10, -14.48)
CIE-LCH	lch(8.18, 14.63, 278.26°)
OKLab	oklab(20.9% -0.0078 -0.041)
OKLCH	oklch(20.9% 0.042 259.2)
XYZ	xyz(0.9141, 0.9058, 2.4117)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0C182B #2B1F0C

analogous

#0C272B #0C182B #0F0C2B

triadic

#0C182B #2B0C18 #182B0C

tetradic

#0C182B #2B0C27 #2B1F0C #0C2B0F

square

#0C182B #2B0C27 #2B1F0C #0C2B0F

split-complementary

#0C182B #2B0F0C #272B0C

monochromatic

#070D18 #070D18 #0C182B #19335B #274D8B

Accessibility & contrast

On white

17.78

#0C182B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0C182B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0C182B

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0C182B	#FFFFFF	#000000	##FFFFFF
##0C182B	1.00	17.78	1.18	17.78
#FFFFFF	17.78	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10192C

Deuteranopia (green-blind)

#0C172B

Tritanopia (blue-blind)

#001C1F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0c182b;
/* rgb */ color: rgb(12, 24, 43);
/* oklch */ color: oklch(20.9% 0.042 259.2);

Tailwind

colors: {
  custom: {
    50: '#4e5464',
    500: '#0c182b',
    950: '#000000',
  },
}

SCSS

$custom: #0c182b;
$custom-light: #4e5464;
$custom-dark: #000000;

JSON

{
  "hex": "#0c182b",
  "rgb": {
    "r": 12,
    "g": 24,
    "b": 43
  },
  "hsl": {
    "h": 216.774,
    "s": 56.364,
    "l": 10.784
  },
  "oklch": {
    "l": 0.20903,
    "c": 0.0417,
    "h": 259.2
  },
  "luminance": 0.00906
}

Semantic roles & 50–950 ramp

primary

#0C182B

secondary

#66502C

accent

#A548E0

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #0C182B

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

Preview Lab → · Contrast checker → · Palette generator →