#040C2C#040C2C

#040C2C is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.1% C 0.066 H 266.5°. Best body text is #FFFFFF at 19.19:1 contrast (WCAG AA passes).

Color values

HEX	#040C2C
RGB	rgb(4, 12, 44)
HSL	hsl(228, 83%, 9%)
HSV	hsv(228, 91%, 17%)
CMYK	cmyk(90.9%, 72.7%, 0%, 82.7%)
CIE-LAB	lab(4.25, 7.73, -21.47)
CIE-LCH	lch(4.25, 22.82, 289.81°)
OKLab	oklab(17.15% -0.0041 -0.0661)
OKLCH	oklch(17.15% 0.066 266.5)
XYZ	xyz(0.6360, 0.4705, 2.4397)
Luminance	0.0047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.28

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040C2C #2C2404

analogous

#04202C #040C2C #10042C

triadic

#040C2C #2C040C #0C2C04

tetradic

#040C2C #2C0420 #2C2404 #042C10

square

#040C2C #2C0420 #2C2404 #042C10

split-complementary

#040C2C #2C1004 #202C04

monochromatic

#03081C #03081C #040C2C #091B64 #0E2B9C

Accessibility & contrast

On white

19.19

#040C2C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#040C2C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040C2C

19.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040C2C	#FFFFFF	#000000	##FFFFFF
##040C2C	1.00	19.19	1.09	19.19
#FFFFFF	19.19	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00112D

Deuteranopia (green-blind)

#000D2B

Tritanopia (blue-blind)

#00141A

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #040c2c;
/* rgb */ color: rgb(4, 12, 44);
/* oklch */ color: oklch(17.1% 0.066 266.5);

Tailwind

colors: {
  custom: {
    50: '#4a4c65',
    500: '#040c2c',
    950: '#000000',
  },
}

SCSS

$custom: #040c2c;
$custom-light: #4a4c65;
$custom-dark: #000000;

JSON

{
  "hex": "#040c2c",
  "rgb": {
    "r": 4,
    "g": 12,
    "b": 44
  },
  "hsl": {
    "h": 228,
    "s": 83.333,
    "l": 9.412
  },
  "oklch": {
    "l": 0.17149,
    "c": 0.0662,
    "h": 266.5
  },
  "luminance": 0.00471
}

Semantic roles & 50–950 ramp

primary

#040C2C

secondary

#6F5E1D

accent

#D12EFA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #040C2C

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

Preview Lab → · Contrast checker → · Palette generator →