#040D27#040D27

#040D27 is a very dark, muted blue. Relative luminance 0.005; OKLCH L 16.9% C 0.056 H 264.4°. Best body text is #FFFFFF at 19.23:1 contrast (WCAG AA passes).

Color values

HEX	#040D27
RGB	rgb(4, 13, 39)
HSL	hsl(225, 81%, 8%)
HSV	hsv(225, 90%, 15%)
CMYK	cmyk(89.7%, 66.7%, 0%, 84.7%)
CIE-LAB	lab(4.16, 5.03, -17.83)
CIE-LCH	lch(4.16, 18.52, 285.76°)
OKLab	oklab(16.89% -0.0054 -0.0556)
OKLCH	oklch(16.89% 0.056 264.4)
XYZ	xyz(0.5601, 0.4601, 1.9783)
Luminance	0.0046 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.32

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040D27 #271E04

analogous

#041E27 #040D27 #0C0427

triadic

#040D27 #27040D #0D2704

tetradic

#040D27 #27041E #271E04 #04270C

square

#040D27 #27041E #271E04 #04270C

split-complementary

#040D27 #270C04 #1E2704

monochromatic

#03091C #03091C #040D27 #0A205F #0F3296

Accessibility & contrast

On white

19.23

#040D27 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#040D27 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040D27

19.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040D27	#FFFFFF	#000000	##FFFFFF
##040D27	1.00	19.23	1.09	19.23
#FFFFFF	19.23	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011028

Deuteranopia (green-blind)

#000D26

Tritanopia (blue-blind)

#001318

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #040d27;
/* rgb */ color: rgb(4, 13, 39);
/* oklch */ color: oklch(16.9% 0.056 264.4);

Tailwind

colors: {
  custom: {
    50: '#494c61',
    500: '#040d27',
    950: '#000000',
  },
}

SCSS

$custom: #040d27;
$custom-light: #494c61;
$custom-dark: #000000;

JSON

{
  "hex": "#040d27",
  "rgb": {
    "r": 4,
    "g": 13,
    "b": 39
  },
  "hsl": {
    "h": 224.571,
    "s": 81.395,
    "l": 8.431
  },
  "oklch": {
    "l": 0.16886,
    "c": 0.05586,
    "h": 264.4
  },
  "luminance": 0.0046
}

Semantic roles & 50–950 ramp

primary

#040D27

secondary

#6A561D

accent

#C430F8

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010105

muted

#777779

Preview Lab

Preview with #040D27

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

Preview Lab → · Contrast checker → · Palette generator →