#040C24#040C24

#040C24 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 16.3% C 0.052 H 264.8°. Best body text is #FFFFFF at 19.39:1 contrast (WCAG AA passes).

Color values

HEX	#040C24
RGB	rgb(4, 12, 36)
HSL	hsl(225, 80%, 8%)
HSV	hsv(225, 89%, 14%)
CMYK	cmyk(88.9%, 66.7%, 0%, 85.9%)
CIE-LAB	lab(3.76, 4.28, -16.14)
CIE-LCH	lch(3.76, 16.70, 284.84°)
OKLab	oklab(16.31% -0.0048 -0.0519)
OKLCH	oklch(16.31% 0.052 264.8)
XYZ	xyz(0.4999, 0.4161, 1.7227)
Luminance	0.0042 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.22

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040C24 #241C04

analogous

#041C24 #040C24 #0C0424

triadic

#040C24 #24040C #0C2404

tetradic

#040C24 #24041C #241C04 #04240C

square

#040C24 #24041C #241C04 #04240C

split-complementary

#040C24 #240C04 #1C2404

monochromatic

#03091C #03091C #040C24 #0A1E5B #103192

Accessibility & contrast

On white

19.39

#040C24 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040C24 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040C24

19.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040C24	#FFFFFF	#000000	##FFFFFF
##040C24	1.00	19.39	1.08	19.39
#FFFFFF	19.39	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#010F25

Deuteranopia (green-blind)

#000C24

Tritanopia (blue-blind)

#001216

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #040c24;
/* rgb */ color: rgb(4, 12, 36);
/* oklch */ color: oklch(16.3% 0.052 264.8);

Tailwind

colors: {
  custom: {
    50: '#484c5e',
    500: '#040c24',
    950: '#000000',
  },
}

SCSS

$custom: #040c24;
$custom-light: #484c5e;
$custom-dark: #000000;

JSON

{
  "hex": "#040c24",
  "rgb": {
    "r": 4,
    "g": 12,
    "b": 36
  },
  "hsl": {
    "h": 225,
    "s": 80,
    "l": 7.843
  },
  "oklch": {
    "l": 0.16315,
    "c": 0.05209,
    "h": 264.8
  },
  "luminance": 0.00416
}

Semantic roles & 50–950 ramp

primary

#040C24

secondary

#67541D

accent

#C531F6

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#010104

muted

#777779

Preview Lab

Preview with #040C24

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

Preview Lab → · Contrast checker → · Palette generator →