#040B0D#040B0D

#040B0D is a very dark, near-neutral cyan. Relative luminance 0.003; OKLCH L 14.2% C 0.014 H 214.1°. Best body text is #FFFFFF at 19.83:1 contrast (WCAG AA passes).

Color values

HEX	#040B0D
RGB	rgb(4, 11, 13)
HSL	hsl(193, 53%, 3%)
HSV	hsv(193, 69%, 5%)
CMYK	cmyk(69.2%, 15.4%, 0%, 94.9%)
CIE-LAB	lab(2.66, -1.52, -1.49)
CIE-LCH	lch(2.66, 2.13, 224.39°)
OKLab	oklab(14.2% -0.0115 -0.0078)
OKLCH	oklch(14.2% 0.014 214.1)
XYZ	xyz(0.2424, 0.2942, 0.4247)
Luminance	0.0029 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040B0D #0D0604

analogous

#040D0A #040B0D #04060D

triadic

#040B0D #0D040B #0B0D04

tetradic

#040B0D #0A040D #0D0604 #060D04

square

#040B0D #0A040D #0D0604 #060D04

split-complementary

#040B0D #0D0406 #0D0A04

monochromatic

#071417 #071417 #071417 #12333C #215A6B

Accessibility & contrast

On white

19.83

#040B0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#040B0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040B0D

19.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040B0D	#FFFFFF	#000000	##FFFFFF
##040B0D	1.00	19.83	1.06	19.83
#FFFFFF	19.83	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#090A0D

Deuteranopia (green-blind)

#08090D

Tritanopia (blue-blind)

#020C0C

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #040b0d;
/* rgb */ color: rgb(4, 11, 13);
/* oklch */ color: oklch(14.2% 0.014 214.1);

Tailwind

colors: {
  custom: {
    50: '#484c4d',
    500: '#040b0d',
    950: '#000000',
  },
}

SCSS

$custom: #040b0d;
$custom-light: #484c4d;
$custom-dark: #000000;

JSON

{
  "hex": "#040b0d",
  "rgb": {
    "r": 4,
    "g": 11,
    "b": 13
  },
  "hsl": {
    "h": 193.333,
    "s": 52.941,
    "l": 3.333
  },
  "oklch": {
    "l": 0.14199,
    "c": 0.01387,
    "h": 214.1
  },
  "luminance": 0.00294
}

Semantic roles & 50–950 ramp

primary

#040B0D

secondary

#4B2B22

accent

#6C4BDC

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000101

muted

#777777

Preview Lab

Preview with #040B0D

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

Preview Lab → · Contrast checker → · Palette generator →