#040B09#040B09

#040B09 is a very dark, near-neutral teal. Relative luminance 0.003; OKLCH L 14.0% C 0.014 H 177.5°. Best body text is #FFFFFF at 19.87:1 contrast (WCAG AA passes).

Color values

HEX	#040B09
RGB	rgb(4, 11, 9)
HSL	hsl(163, 47%, 3%)
HSV	hsv(163, 64%, 4%)
CMYK	cmyk(63.6%, 0%, 18.2%, 95.7%)
CIE-LAB	lab(2.57, -2.12, 0.12)
CIE-LCH	lch(2.57, 2.12, 176.75°)
OKLab	oklab(14% -0.014 0.0006)
OKLCH	oklch(14% 0.014 177.5)
XYZ	xyz(0.2190, 0.2849, 0.3018)
Luminance	0.0029 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040B09 #0B0406

analogous

#040B05 #040B09 #04090B

triadic

#040B09 #09040B #0B0904

tetradic

#040B09 #05040B #0B0406 #090B04

square

#040B09 #05040B #0B0406 #090B04

split-complementary

#040B09 #0B0409 #0B0504

monochromatic

#081612 #081612 #081612 #14382E #256552

Accessibility & contrast

On white

19.87

#040B09 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#040B09 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040B09

19.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040B09	#FFFFFF	#000000	##FFFFFF
##040B09	1.00	19.87	1.06	19.87
#FFFFFF	19.87	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A0A09

Deuteranopia (green-blind)

#090909

Tritanopia (blue-blind)

#030B0A

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #040b09;
/* rgb */ color: rgb(4, 11, 9);
/* oklch */ color: oklch(14.0% 0.014 177.5);

Tailwind

colors: {
  custom: {
    50: '#484c4b',
    500: '#040b09',
    950: '#000000',
  },
}

SCSS

$custom: #040b09;
$custom-light: #484c4b;
$custom-dark: #000000;

JSON

{
  "hex": "#040b09",
  "rgb": {
    "r": 4,
    "g": 11,
    "b": 9
  },
  "hsl": {
    "h": 162.857,
    "s": 46.667,
    "l": 2.941
  },
  "oklch": {
    "l": 0.13998,
    "c": 0.01404,
    "h": 177.5
  },
  "luminance": 0.00285
}

Semantic roles & 50–950 ramp

primary

#040B09

secondary

#47242E

accent

#5177D6

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000101

muted

#777777

Preview Lab

Preview with #040B09

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

Preview Lab → · Contrast checker → · Palette generator →