#040C34#040C34

#040C34 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.1% C 0.079 H 267.0°. Best body text is #FFFFFF at 18.96:1 contrast (WCAG AA passes).

Color values

HEX	#040C34
RGB	rgb(4, 12, 52)
HSL	hsl(230, 86%, 11%)
HSV	hsv(230, 92%, 20%)
CMYK	cmyk(92.3%, 76.9%, 0%, 79.6%)
CIE-LAB	lab(4.85, 11.93, -26.47)
CIE-LCH	lch(4.85, 29.04, 294.25°)
OKLab	oklab(18.06% -0.0042 -0.0793)
OKLCH	oklch(18.06% 0.079 267)
XYZ	xyz(0.8012, 0.5366, 3.3095)
Luminance	0.0054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 2.90

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040C34 #342C04

analogous

#042434 #040C34 #140434

triadic

#040C34 #34040C #0C3404

tetradic

#040C34 #340424 #342C04 #043414

square

#040C34 #340424 #342C04 #043414

split-complementary

#040C34 #341404 #243404

monochromatic

#02071C #02071C #040C34 #08196D #0D26A6

Accessibility & contrast

On white

18.96

#040C34 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#040C34 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040C34

18.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040C34	#FFFFFF	#000000	##FFFFFF
##040C34	1.00	18.96	1.11	18.96
#FFFFFF	18.96	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001335

Deuteranopia (green-blind)

#000E33

Tritanopia (blue-blind)

#00171E

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040c34;
/* rgb */ color: rgb(4, 12, 52);
/* oklch */ color: oklch(18.1% 0.079 267.0);

Tailwind

colors: {
  custom: {
    50: '#4c4c6c',
    500: '#040c34',
    950: '#000000',
  },
}

SCSS

$custom: #040c34;
$custom-light: #4c4c6c;
$custom-dark: #000000;

JSON

{
  "hex": "#040c34",
  "rgb": {
    "r": 4,
    "g": 12,
    "b": 52
  },
  "hsl": {
    "h": 230,
    "s": 85.714,
    "l": 10.98
  },
  "oklch": {
    "l": 0.18062,
    "c": 0.07945,
    "h": 267
  },
  "luminance": 0.00537
}

Semantic roles & 50–950 ramp

primary

#040C34

secondary

#76671E

accent

#D92CFC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010107

muted

#77777A

Preview Lab

Preview with #040C34

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

Preview Lab → · Contrast checker → · Palette generator →