#040C1C#040C1C

#040C1C is a very dark, muted blue. Relative luminance 0.004; OKLCH L 15.6% C 0.037 H 260.0°. Best body text is #FFFFFF at 19.54:1 contrast (WCAG AA passes).

Color values

HEX	#040C1C
RGB	rgb(4, 12, 28)
HSL	hsl(220, 75%, 6%)
HSV	hsv(220, 86%, 11%)
CMYK	cmyk(85.7%, 57.1%, 0%, 89%)
CIE-LAB	lab(3.37, 1.51, -10.49)
CIE-LCH	lch(3.37, 10.60, 278.21°)
OKLab	oklab(15.58% -0.0065 -0.0367)
OKLCH	oklch(15.58% 0.037 260)
XYZ	xyz(0.3911, 0.3726, 1.1497)
Luminance	0.0037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040C1C #1C1404

analogous

#04181C #040C1C #08041C

triadic

#040C1C #1C040C #0C1C04

tetradic

#040C1C #1C0418 #1C1404 #041C08

square

#040C1C #1C0418 #1C1404 #041C08

split-complementary

#040C1C #1C0804 #181C04

monochromatic

#040B1B #040B1B #040C1C #0C2352 #133A87

Accessibility & contrast

On white

19.54

#040C1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040C1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040C1C

19.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040C1C	#FFFFFF	#000000	##FFFFFF
##040C1C	1.00	19.54	1.07	19.54
#FFFFFF	19.54	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#060D1D

Deuteranopia (green-blind)

#030B1C

Tritanopia (blue-blind)

#001012

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #040c1c;
/* rgb */ color: rgb(4, 12, 28);
/* oklch */ color: oklch(15.6% 0.037 260.0);

Tailwind

colors: {
  custom: {
    50: '#484c58',
    500: '#040c1c',
    950: '#000000',
  },
}

SCSS

$custom: #040c1c;
$custom-light: #484c58;
$custom-dark: #000000;

JSON

{
  "hex": "#040c1c",
  "rgb": {
    "r": 4,
    "g": 12,
    "b": 28
  },
  "hsl": {
    "h": 220,
    "s": 75,
    "l": 6.275
  },
  "oklch": {
    "l": 0.15581,
    "c": 0.03723,
    "h": 260
  },
  "luminance": 0.00373
}

Semantic roles & 50–950 ramp

primary

#040C1C

secondary

#5E491D

accent

#B336F2

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000103

muted

#777778

Preview Lab

Preview with #040C1C

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

Preview Lab → · Contrast checker → · Palette generator →