#040A1A#040A1A

#040A1A is a very dark, muted blue. Relative luminance 0.003; OKLCH L 14.8% C 0.037 H 263.4°. Best body text is #FFFFFF at 19.75:1 contrast (WCAG AA passes).

Color values

HEX	#040A1A
RGB	rgb(4, 10, 26)
HSL	hsl(224, 73%, 6%)
HSV	hsv(224, 85%, 10%)
CMYK	cmyk(84.6%, 61.5%, 0%, 89.8%)
CIE-LAB	lab(2.87, 1.77, -9.63)
CIE-LCH	lch(2.87, 9.80, 280.44°)
OKLab	oklab(14.81% -0.0042 -0.0364)
OKLCH	oklch(14.81% 0.037 263.4)
XYZ	xyz(0.3450, 0.3174, 1.0202)
Luminance	0.0032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A1A #1A1404

analogous

#04151A #040A1A #09041A

triadic

#040A1A #1A040A #0A1A04

tetradic

#040A1A #1A0415 #1A1404 #041A09

square

#040A1A #1A0415 #1A1404 #041A09

split-complementary

#040A1A #1A0904 #151A04

monochromatic

#040A1B #040A1B #040A1B #0C1E4F #143384

Accessibility & contrast

On white

19.75

#040A1A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#040A1A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A1A

19.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A1A	#FFFFFF	#000000	##FFFFFF
##040A1A	1.00	19.75	1.06	19.75
#FFFFFF	19.75	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#040C1B

Deuteranopia (green-blind)

#02091A

Tritanopia (blue-blind)

#000E10

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #040a1a;
/* rgb */ color: rgb(4, 10, 26);
/* oklch */ color: oklch(14.8% 0.037 263.4);

Tailwind

colors: {
  custom: {
    50: '#484b56',
    500: '#040a1a',
    950: '#000000',
  },
}

SCSS

$custom: #040a1a;
$custom-light: #484b56;
$custom-dark: #000000;

JSON

{
  "hex": "#040a1a",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 26
  },
  "hsl": {
    "h": 223.636,
    "s": 73.333,
    "l": 5.882
  },
  "oklch": {
    "l": 0.14808,
    "c": 0.03665,
    "h": 263.4
  },
  "luminance": 0.00317
}

Semantic roles & 50–950 ramp

primary

#040A1A

secondary

#5C4B1E

accent

#BE38F0

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000103

muted

#777778

Preview Lab

Preview with #040A1A

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

Preview Lab → · Contrast checker → · Palette generator →