#040D0B#040D0B

#040D0B is a very dark, near-neutral teal. Relative luminance 0.003; OKLCH L 14.8% C 0.016 H 180.5°. Best body text is #FFFFFF at 19.67:1 contrast (WCAG AA passes).

Color values

HEX	#040D0B
RGB	rgb(4, 13, 11)
HSL	hsl(167, 53%, 3%)
HSV	hsv(167, 69%, 5%)
CMYK	cmyk(69.2%, 0%, 15.4%, 94.9%)
CIE-LAB	lab(3.05, -2.73, -0.01)
CIE-LCH	lch(3.05, 2.73, 180.15°)
OKLab	oklab(14.8% -0.0164 -0.0001)
OKLCH	oklch(14.8% 0.016 180.5)
XYZ	xyz(0.2544, 0.3378, 0.3683)
Luminance	0.0034 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040D0B #0D0406

analogous

#040D06 #040D0B #040A0D

triadic

#040D0B #0B040D #0D0B04

tetradic

#040D0B #06040D #0D0406 #0A0D04

square

#040D0B #06040D #0D0406 #0A0D04

split-complementary

#040D0B #0D040A #0D0604

monochromatic

#071714 #071714 #071714 #123C33 #216B5A

Accessibility & contrast

On white

19.67

#040D0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040D0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040D0B

19.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040D0B	#FFFFFF	#000000	##FFFFFF
##040D0B	1.00	19.67	1.07	19.67
#FFFFFF	19.67	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0C0B

Deuteranopia (green-blind)

#0A0B0B

Tritanopia (blue-blind)

#020D0C

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #040d0b;
/* rgb */ color: rgb(4, 13, 11);
/* oklch */ color: oklch(14.8% 0.016 180.5);

Tailwind

colors: {
  custom: {
    50: '#484d4c',
    500: '#040d0b',
    950: '#000000',
  },
}

SCSS

$custom: #040d0b;
$custom-light: #484d4c;
$custom-dark: #000000;

JSON

{
  "hex": "#040d0b",
  "rgb": {
    "r": 4,
    "g": 13,
    "b": 11
  },
  "hsl": {
    "h": 166.667,
    "s": 52.941,
    "l": 3.333
  },
  "oklch": {
    "l": 0.14799,
    "c": 0.01637,
    "h": 180.5
  },
  "luminance": 0.00338
}

Semantic roles & 50–950 ramp

primary

#040D0B

secondary

#4B222B

accent

#4B6CDC

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000101

muted

#777777

Preview Lab

Preview with #040D0B

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

Preview Lab → · Contrast checker → · Palette generator →