#04040B#04040B

#04040B is a very dark, near-neutral blue. Relative luminance 0.001; OKLCH L 11.2% C 0.020 H 282.7°. Best body text is #FFFFFF at 20.44:1 contrast (WCAG AA passes).

Color values

HEX	#04040B
RGB	rgb(4, 4, 11)
HSL	hsl(240, 47%, 3%)
HSV	hsv(240, 64%, 4%)
CMYK	cmyk(63.6%, 63.6%, 0%, 95.7%)
CIE-LAB	lab(1.24, 0.98, -2.66)
CIE-LCH	lch(1.24, 2.83, 290.20°)
OKLab	oklab(11.22% 0.0044 -0.0193)
OKLCH	oklch(11.22% 0.02 282.7)
XYZ	xyz(0.1539, 0.1368, 0.3348)
Luminance	0.0014 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04040B #0B0B04

analogous

#04070B #04040B #07040B

triadic

#04040B #0B0404 #040B04

tetradic

#04040B #0B0407 #0B0B04 #040B07

square

#04040B #0B0407 #0B0B04 #040B07

split-complementary

#04040B #0B0704 #070B04

monochromatic

#080816 #080816 #080816 #141438 #252565

Accessibility & contrast

On white

20.44

#04040B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#04040B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04040B

20.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04040B	#FFFFFF	#000000	##FFFFFF
##04040B	1.00	20.44	1.03	20.44
#FFFFFF	20.44	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03050B

Deuteranopia (green-blind)

#02040B

Tritanopia (blue-blind)

#030506

Achromatopsia (no color)

#050505

Design tokens & code

CSS

--color: #04040b;
/* rgb */ color: rgb(4, 4, 11);
/* oklch */ color: oklch(11.2% 0.020 282.7);

Tailwind

colors: {
  custom: {
    50: '#48484c',
    500: '#04040b',
    950: '#000000',
  },
}

SCSS

$custom: #04040b;
$custom-light: #48484c;
$custom-dark: #000000;

JSON

{
  "hex": "#04040b",
  "rgb": {
    "r": 4,
    "g": 4,
    "b": 11
  },
  "hsl": {
    "h": 240,
    "s": 46.667,
    "l": 2.941
  },
  "oklch": {
    "l": 0.11223,
    "c": 0.01978,
    "h": 282.7
  },
  "luminance": 0.00137
}

Semantic roles & 50–950 ramp

primary

#04040B

secondary

#474724

accent

#D651D6

background

#F4F4F4

surface

#E6E6E7

border

#C2C2C3

text

#000001

muted

#777777

Preview Lab

Preview with #04040B

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

Preview Lab → · Contrast checker → · Palette generator →