#040A16#040A16

#040A16 is a very dark, muted blue. Relative luminance 0.003; OKLCH L 14.5% C 0.029 H 259.1°. Best body text is #FFFFFF at 19.81:1 contrast (WCAG AA passes).

Color values

HEX	#040A16
RGB	rgb(4, 10, 22)
HSL	hsl(220, 69%, 5%)
HSV	hsv(220, 82%, 9%)
CMYK	cmyk(81.8%, 54.5%, 0%, 91.4%)
CIE-LAB	lab(2.72, 0.72, -6.77)
CIE-LCH	lch(2.72, 6.81, 276.04°)
OKLab	oklab(14.47% -0.0054 -0.0284)
OKLCH	oklch(14.47% 0.029 259.1)
XYZ	xyz(0.3034, 0.3008, 0.8010)
Luminance	0.0030 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A16 #161004

analogous

#041316 #040A16 #070416

triadic

#040A16 #16040A #0A1604

tetradic

#040A16 #160413 #161004 #041607

square

#040A16 #160413 #161004 #041607

split-complementary

#040A16 #160704 #131604

monochromatic

#050C1A #050C1A #050C1A #0D224A #17397E

Accessibility & contrast

On white

19.81

#040A16 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#040A16 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A16

19.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A16	#FFFFFF	#000000	##FFFFFF
##040A16	1.00	19.81	1.06	19.81
#FFFFFF	19.81	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#060B16

Deuteranopia (green-blind)

#040916

Tritanopia (blue-blind)

#000D0E

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #040a16;
/* rgb */ color: rgb(4, 10, 22);
/* oklch */ color: oklch(14.5% 0.029 259.1);

Tailwind

colors: {
  custom: {
    50: '#484b52',
    500: '#040a16',
    950: '#000000',
  },
}

SCSS

$custom: #040a16;
$custom-light: #484b52;
$custom-dark: #000000;

JSON

{
  "hex": "#040a16",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 22
  },
  "hsl": {
    "h": 220,
    "s": 69.231,
    "l": 5.098
  },
  "oklch": {
    "l": 0.14474,
    "c": 0.0289,
    "h": 259.1
  },
  "luminance": 0.00301
}

Semantic roles & 50–950 ramp

primary

#040A16

secondary

#57441E

accent

#B13CEC

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000102

muted

#777778

Preview Lab

Preview with #040A16

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

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