#040A24#040A24

#040A24 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 15.8% C 0.055 H 267.3°. Best body text is #FFFFFF at 19.55:1 contrast (WCAG AA passes).

Color values

HEX	#040A24
RGB	rgb(4, 10, 36)
HSL	hsl(229, 80%, 8%)
HSV	hsv(229, 89%, 14%)
CMYK	cmyk(88.9%, 72.2%, 0%, 85.9%)
CIE-LAB	lab(3.34, 5.12, -16.78)
CIE-LCH	lch(3.34, 17.55, 286.97°)
OKLab	oklab(15.78% -0.0026 -0.0553)
OKLCH	oklch(15.78% 0.055 267.3)
XYZ	xyz(0.4769, 0.3702, 1.7150)
Luminance	0.0037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A24 #241E04

analogous

#041A24 #040A24 #0E0424

triadic

#040A24 #24040A #0A2404

tetradic

#040A24 #24041A #241E04 #04240E

square

#040A24 #24041A #241E04 #04240E

split-complementary

#040A24 #240E04 #1A2404

monochromatic

#03081C #03081C #040A24 #0A195B #102992

Accessibility & contrast

On white

19.55

#040A24 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040A24 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A24

19.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A24	#FFFFFF	#000000	##FFFFFF
##040A24	1.00	19.55	1.07	19.55
#FFFFFF	19.55	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000E25

Deuteranopia (green-blind)

#000B23

Tritanopia (blue-blind)

#001015

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #040a24;
/* rgb */ color: rgb(4, 10, 36);
/* oklch */ color: oklch(15.8% 0.055 267.3);

Tailwind

colors: {
  custom: {
    50: '#484b5e',
    500: '#040a24',
    950: '#000000',
  },
}

SCSS

$custom: #040a24;
$custom-light: #484b5e;
$custom-dark: #000000;

JSON

{
  "hex": "#040a24",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 36
  },
  "hsl": {
    "h": 228.75,
    "s": 80,
    "l": 7.843
  },
  "oklch": {
    "l": 0.15777,
    "c": 0.05537,
    "h": 267.3
  },
  "luminance": 0.0037
}

Semantic roles & 50–950 ramp

primary

#040A24

secondary

#67591D

accent

#D131F6

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#010104

muted

#777779

Preview Lab

Preview with #040A24

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

Preview Lab → · Contrast checker → · Palette generator →