#000A1B#000A1B

#000A1B is a very dark, muted blue. Relative luminance 0.003; OKLCH L 14.4% C 0.043 H 251.9°. Best body text is #FFFFFF at 19.83:1 contrast (WCAG AA passes).

Color values

HEX	#000A1B
RGB	rgb(0, 10, 27)
HSL	hsl(218, 100%, 5%)
HSV	hsv(218, 100%, 11%)
CMYK	cmyk(100%, 63%, 0%, 89.4%)
CIE-LAB	lab(2.68, 1.01, -10.74)
CIE-LCH	lch(2.68, 10.79, 275.40°)
OKLab	oklab(14.4% -0.0133 -0.0409)
OKLCH	oklch(14.4% 0.043 251.9)
XYZ	xyz(0.3063, 0.2962, 1.0777)
Luminance	0.0030 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#000A1B #1B1100

analogous

#00171B #000A1B #04001B

triadic

#000A1B #1B000A #0A1B00

tetradic

#000A1B #1B0017 #1B1100 #001B04

square

#000A1B #1B0017 #1B1100 #001B04

split-complementary

#000A1B #1B0400 #171B00

monochromatic

#000B1F #000B1F #000B1F #002158 #003795

Accessibility & contrast

On white

19.83

#000A1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#000A1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #000A1B

19.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##000A1B	#FFFFFF	#000000	##FFFFFF
##000A1B	1.00	19.83	1.06	19.83
#FFFFFF	19.83	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#030B1C

Deuteranopia (green-blind)

#00081B

Tritanopia (blue-blind)

#000E11

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #000a1b;
/* rgb */ color: rgb(0, 10, 27);
/* oklch */ color: oklch(14.4% 0.043 251.9);

Tailwind

colors: {
  custom: {
    50: '#464b57',
    500: '#000a1b',
    950: '#000000',
  },
}

SCSS

$custom: #000a1b;
$custom-light: #464b57;
$custom-dark: #000000;

JSON

{
  "hex": "#000a1b",
  "rgb": {
    "r": 0,
    "g": 10,
    "b": 27
  },
  "hsl": {
    "h": 217.778,
    "s": 100,
    "l": 5.294
  },
  "oklch": {
    "l": 0.144,
    "c": 0.04299,
    "h": 251.9
  },
  "luminance": 0.00296
}

Semantic roles & 50–950 ramp

primary

#000A1B

secondary

#654612

accent

#B029FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000103

muted

#767778

Preview Lab

Preview with #000A1B

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

Preview Lab → · Contrast checker → · Palette generator →