#040D34#040D34

#040D34 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.3% C 0.078 H 266.4°. Best body text is #FFFFFF at 18.88:1 contrast (WCAG AA passes).

Color values

HEX	#040D34
RGB	rgb(4, 13, 52)
HSL	hsl(229, 86%, 11%)
HSV	hsv(229, 92%, 20%)
CMYK	cmyk(92.3%, 75%, 0%, 79.6%)
CIE-LAB	lab(5.07, 11.47, -26.11)
CIE-LCH	lch(5.07, 28.52, 293.71°)
OKLab	oklab(18.29% -0.0048 -0.0778)
OKLCH	oklch(18.29% 0.078 266.4)
XYZ	xyz(0.8136, 0.5615, 3.3136)
Luminance	0.0056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.18

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040D34 #342B04

analogous

#042534 #040D34 #130434

triadic

#040D34 #34040D #0D3404

tetradic

#040D34 #340425 #342B04 #043413

square

#040D34 #340425 #342B04 #043413

split-complementary

#040D34 #341304 #253404

monochromatic

#02071C #02071C #040D34 #081B6D #0D29A6

Accessibility & contrast

On white

18.88

#040D34 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#040D34 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040D34

18.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040D34	#FFFFFF	#000000	##FFFFFF
##040D34	1.00	18.88	1.11	18.88
#FFFFFF	18.88	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001335

Deuteranopia (green-blind)

#000F33

Tritanopia (blue-blind)

#00171E

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #040d34;
/* rgb */ color: rgb(4, 13, 52);
/* oklch */ color: oklch(18.3% 0.078 266.4);

Tailwind

colors: {
  custom: {
    50: '#4c4c6c',
    500: '#040d34',
    950: '#000000',
  },
}

SCSS

$custom: #040d34;
$custom-light: #4c4c6c;
$custom-dark: #000000;

JSON

{
  "hex": "#040d34",
  "rgb": {
    "r": 4,
    "g": 13,
    "b": 52
  },
  "hsl": {
    "h": 228.75,
    "s": 85.714,
    "l": 10.98
  },
  "oklch": {
    "l": 0.1829,
    "c": 0.078,
    "h": 266.4
  },
  "luminance": 0.00562
}

Semantic roles & 50–950 ramp

primary

#040D34

secondary

#76661E

accent

#D52CFC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010107

muted

#77777A

Preview Lab

Preview with #040D34

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

Preview Lab → · Contrast checker → · Palette generator →