#040D0F#040D0F

#040D0F is a very dark, near-neutral cyan. Relative luminance 0.003; OKLCH L 15.0% C 0.016 H 211.0°. Best body text is #FFFFFF at 19.63:1 contrast (WCAG AA passes).

Color values

HEX	#040D0F
RGB	rgb(4, 13, 15)
HSL	hsl(191, 58%, 4%)
HSV	hsv(191, 73%, 6%)
CMYK	cmyk(73.3%, 13.3%, 0%, 94.1%)
CIE-LAB	lab(3.14, -2.08, -1.79)
CIE-LCH	lch(3.14, 2.74, 220.81°)
OKLab	oklab(15% -0.0139 -0.0083)
OKLCH	oklch(15% 0.016 211)
XYZ	xyz(0.2802, 0.3481, 0.5043)
Luminance	0.0035 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040D0F #0F0604

analogous

#040F0B #040D0F #04070F

triadic

#040D0F #0F040D #0D0F04

tetradic

#040D0F #0B040F #0F0604 #070F04

square

#040D0F #0B040F #0F0604 #070F04

split-complementary

#040D0F #0F0407 #0F0B04

monochromatic

#061518 #061518 #061518 #11373F #1E6170

Accessibility & contrast

On white

19.63

#040D0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040D0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040D0F

19.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040D0F	#FFFFFF	#000000	##FFFFFF
##040D0F	1.00	19.63	1.07	19.63
#FFFFFF	19.63	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0C0F

Deuteranopia (green-blind)

#090B0F

Tritanopia (blue-blind)

#010E0E

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #040d0f;
/* rgb */ color: rgb(4, 13, 15);
/* oklch */ color: oklch(15.0% 0.016 211.0);

Tailwind

colors: {
  custom: {
    50: '#484d4e',
    500: '#040d0f',
    950: '#000000',
  },
}

SCSS

$custom: #040d0f;
$custom-light: #484d4e;
$custom-dark: #000000;

JSON

{
  "hex": "#040d0f",
  "rgb": {
    "r": 4,
    "g": 13,
    "b": 15
  },
  "hsl": {
    "h": 190.909,
    "s": 57.895,
    "l": 3.725
  },
  "oklch": {
    "l": 0.14998,
    "c": 0.01618,
    "h": 211
  },
  "luminance": 0.00348
}

Semantic roles & 50–950 ramp

primary

#040D0F

secondary

#4E2921

accent

#6347E1

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000101

muted

#777777

Preview Lab

Preview with #040D0F

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

Preview Lab → · Contrast checker → · Palette generator →