#00040C#00040C

#00040C is a very dark, muted blue. Relative luminance 0.001; OKLCH L 10.4% C 0.028 H 247.9°. Best body text is #FFFFFF at 20.54:1 contrast (WCAG AA passes).

Color values

HEX	#00040C
RGB	rgb(0, 4, 12)
HSL	hsl(220, 100%, 2%)
HSV	hsv(220, 100%, 5%)
CMYK	cmyk(100%, 66.7%, 0%, 95.3%)
CIE-LAB	lab(1.02, 0.08, -3.44)
CIE-LCH	lch(1.02, 3.44, 271.38°)
OKLab	oklab(10.41% -0.0105 -0.0259)
OKLCH	oklch(10.41% 0.028 247.9)
XYZ	xyz(0.1098, 0.1134, 0.3639)
Luminance	0.0011 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00040C #0C0800

analogous

#000A0C #00040C #02000C

triadic

#00040C #0C0004 #040C00

tetradic

#00040C #0C000A #0C0800 #000C02

square

#00040C #0C000A #0C0800 #000C02

split-complementary

#00040C #0C0200 #0A0C00

monochromatic

#000A1F #000A1F #000A1F #001849 #002D86

Accessibility & contrast

On white

20.54

#00040C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.02

#00040C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00040C

20.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00040C	#FFFFFF	#000000	##FFFFFF
##00040C	1.00	20.54	1.02	20.54
#FFFFFF	20.54	1.00	21.00	1.00
#000000	1.02	21.00	1.00	21.00
##FFFFFF	20.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02040C

Deuteranopia (green-blind)

#01030C

Tritanopia (blue-blind)

#000606

Achromatopsia (no color)

#040404

Design tokens & code

CSS

--color: #00040c;
/* rgb */ color: rgb(0, 4, 12);
/* oklch */ color: oklch(10.4% 0.028 247.9);

Tailwind

colors: {
  custom: {
    50: '#47484c',
    500: '#00040c',
    950: '#000000',
  },
}

SCSS

$custom: #00040c;
$custom-light: #47484c;
$custom-dark: #000000;

JSON

{
  "hex": "#00040c",
  "rgb": {
    "r": 0,
    "g": 4,
    "b": 12
  },
  "hsl": {
    "h": 220,
    "s": 100,
    "l": 2.353
  },
  "oklch": {
    "l": 0.10413,
    "c": 0.02796,
    "h": 247.9
  },
  "luminance": 0.00113
}

Semantic roles & 50–950 ramp

primary

#00040C

secondary

#584010

accent

#B829FF

background

#F3F4F4

surface

#E5E6E7

border

#C1C2C3

text

#000001

muted

#777777

Preview Lab

Preview with #00040C

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

Preview Lab → · Contrast checker → · Palette generator →