#000B1F#000B1F

#000B1F is a very dark, muted blue. Relative luminance 0.003; OKLCH L 15.1% C 0.048 H 254.2°. Best body text is #FFFFFF at 19.67:1 contrast (WCAG AA passes).

Color values

HEX	#000B1F
RGB	rgb(0, 11, 31)
HSL	hsl(219, 100%, 6%)
HSV	hsv(219, 100%, 12%)
CMYK	cmyk(100%, 64.5%, 0%, 87.8%)
CIE-LAB	lab(3.05, 1.86, -13.35)
CIE-LCH	lch(3.05, 13.47, 277.94°)
OKLab	oklab(15.1% -0.0132 -0.0466)
OKLCH	oklch(15.1% 0.048 254.2)
XYZ	xyz(0.3669, 0.3382, 1.3420)
Luminance	0.0034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#000B1F #1F1400

analogous

#001A1F #000B1F #04001F

triadic

#000B1F #1F000B #0B1F00

tetradic

#000B1F #1F001A #1F1400 #001F04

square

#000B1F #1F001A #1F1400 #001F04

split-complementary

#000B1F #1F0400 #1A1F00

monochromatic

#000B1F #000B1F #000B1F #00215C #003699

Accessibility & contrast

On white

19.67

#000B1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#000B1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #000B1F

19.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##000B1F	#FFFFFF	#000000	##FFFFFF
##000B1F	1.00	19.67	1.07	19.67
#FFFFFF	19.67	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#020D20

Deuteranopia (green-blind)

#000A1F

Tritanopia (blue-blind)

#001013

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #000b1f;
/* rgb */ color: rgb(0, 11, 31);
/* oklch */ color: oklch(15.1% 0.048 254.2);

Tailwind

colors: {
  custom: {
    50: '#464c5a',
    500: '#000b1f',
    950: '#000000',
  },
}

SCSS

$custom: #000b1f;
$custom-light: #464c5a;
$custom-dark: #000000;

JSON

{
  "hex": "#000b1f",
  "rgb": {
    "r": 0,
    "g": 11,
    "b": 31
  },
  "hsl": {
    "h": 218.71,
    "s": 100,
    "l": 6.078
  },
  "oklch": {
    "l": 0.15099,
    "c": 0.04843,
    "h": 254.2
  },
  "luminance": 0.00338
}

Semantic roles & 50–950 ramp

primary

#000B1F

secondary

#684A12

accent

#B329FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000103

muted

#767778

Preview Lab

Preview with #000B1F

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

Preview Lab → · Contrast checker → · Palette generator →