#00010B#00010B

#00010B is a very dark, muted blue. Relative luminance 0.000; OKLCH L 8.0% C 0.039 H 262.6°. Best body text is #FFFFFF at 20.81:1 contrast (WCAG AA passes).

Color values

HEX	#00010B
RGB	rgb(0, 1, 11)
HSL	hsl(235, 100%, 2%)
HSV	hsv(235, 100%, 4%)
CMYK	cmyk(100%, 90.9%, 0%, 95.7%)
CIE-LAB	lab(0.41, 1.13, -3.89)
CIE-LCH	lch(0.41, 4.05, 286.21°)
OKLab	oklab(7.97% -0.005 -0.0385)
OKLCH	oklch(7.97% 0.039 262.6)
XYZ	xyz(0.0712, 0.0459, 0.3216)
Luminance	0.0005 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00010B #0B0A00

analogous

#00070B #00010B #05000B

triadic

#00010B #0B0001 #010B00

tetradic

#00010B #0B0007 #0B0A00 #000B05

square

#00010B #0B0007 #0B0A00 #000B05

split-complementary

#00010B #0B0500 #070B00

monochromatic

#00031F #00031F #00031F #000748 #000C85

Accessibility & contrast

On white

20.81

#00010B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.01

#00010B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00010B

20.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00010B	#FFFFFF	#000000	##FFFFFF
##00010B	1.00	20.81	1.01	20.81
#FFFFFF	20.81	1.00	21.00	1.00
#000000	1.01	21.00	1.00	21.00
##FFFFFF	20.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00020B

Deuteranopia (green-blind)

#00010B

Tritanopia (blue-blind)

#000304

Achromatopsia (no color)

#020202

Design tokens & code

CSS

--color: #00010b;
/* rgb */ color: rgb(0, 1, 11);
/* oklch */ color: oklch(8.0% 0.039 262.6);

Tailwind

colors: {
  custom: {
    50: '#47474c',
    500: '#00010b',
    950: '#000000',
  },
}

SCSS

$custom: #00010b;
$custom-light: #47474c;
$custom-dark: #000000;

JSON

{
  "hex": "#00010b",
  "rgb": {
    "r": 0,
    "g": 1,
    "b": 11
  },
  "hsl": {
    "h": 234.545,
    "s": 100,
    "l": 2.157
  },
  "oklch": {
    "l": 0.07973,
    "c": 0.03885,
    "h": 262.6
  },
  "luminance": 0.00046
}

Semantic roles & 50–950 ramp

primary

#00010B

secondary

#57510F

accent

#EC29FF

background

#F3F3F4

surface

#E5E5E7

border

#C1C1C3

text

#000001

muted

#777777

Preview Lab

Preview with #00010B

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

Preview Lab → · Contrast checker → · Palette generator →