#040D36#040D36

#040D36 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.5% C 0.081 H 266.5°. Best body text is #FFFFFF at 18.82:1 contrast (WCAG AA passes).

Color values

HEX	#040D36
RGB	rgb(4, 13, 54)
HSL	hsl(229, 86%, 11%)
HSV	hsv(229, 93%, 21%)
CMYK	cmyk(92.6%, 75.9%, 0%, 78.8%)
CIE-LAB	lab(5.24, 12.63, -27.31)
CIE-LCH	lch(5.24, 30.09, 294.82°)
OKLab	oklab(18.52% -0.0049 -0.0811)
OKLCH	oklch(18.52% 0.081 266.5)
XYZ	xyz(0.8596, 0.5799, 3.5559)
Luminance	0.0058 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 2.70

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040D36 #362D04

analogous

#042636 #040D36 #140436

triadic

#040D36 #36040D #0D3604

tetradic

#040D36 #360426 #362D04 #043614

square

#040D36 #360426 #362D04 #043614

split-complementary

#040D36 #361404 #263604

monochromatic

#02071C #02071C #040D36 #081B6F #0C28A8

Accessibility & contrast

On white

18.82

#040D36 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#040D36 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040D36

18.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040D36	#FFFFFF	#000000	##FFFFFF
##040D36	1.00	18.82	1.12	18.82
#FFFFFF	18.82	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001437

Deuteranopia (green-blind)

#000F35

Tritanopia (blue-blind)

#00181F

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #040d36;
/* rgb */ color: rgb(4, 13, 54);
/* oklch */ color: oklch(18.5% 0.081 266.5);

Tailwind

colors: {
  custom: {
    50: '#4d4c6d',
    500: '#040d36',
    950: '#000000',
  },
}

SCSS

$custom: #040d36;
$custom-light: #4d4c6d;
$custom-dark: #000000;

JSON

{
  "hex": "#040d36",
  "rgb": {
    "r": 4,
    "g": 13,
    "b": 54
  },
  "hsl": {
    "h": 229.2,
    "s": 86.207,
    "l": 11.373
  },
  "oklch": {
    "l": 0.18522,
    "c": 0.08122,
    "h": 266.5
  },
  "luminance": 0.0058
}

Semantic roles & 50–950 ramp

primary

#040D36

secondary

#78681E

accent

#D72BFC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020107

muted

#78777A

Preview Lab

Preview with #040D36

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

Preview Lab → · Contrast checker → · Palette generator →