#000B23#000B23

#000B23 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 15.5% C 0.055 H 257.1°. Best body text is #FFFFFF at 19.59:1 contrast (WCAG AA passes).

Color values

HEX	#000B23
RGB	rgb(0, 11, 35)
HSL	hsl(221, 100%, 7%)
HSV	hsv(221, 100%, 14%)
CMYK	cmyk(100%, 68.6%, 0%, 86.3%)
CIE-LAB	lab(3.26, 3.28, -16.16)
CIE-LCH	lch(3.26, 16.49, 281.49°)
OKLab	oklab(15.51% -0.0123 -0.054)
OKLCH	oklch(15.51% 0.055 257.1)
XYZ	xyz(0.4229, 0.3606, 1.6371)
Luminance	0.0036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#000B23 #231800

analogous

#001D23 #000B23 #070023

triadic

#000B23 #23000B #0B2300

tetradic

#000B23 #23001D #231800 #002307

square

#000B23 #23001D #231800 #002307

split-complementary

#000B23 #230700 #1D2300

monochromatic

#000A1F #000A1F #000B23 #001E60 #00319D

Accessibility & contrast

On white

19.59

#000B23 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#000B23 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #000B23

19.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##000B23	#FFFFFF	#000000	##FFFFFF
##000B23	1.00	19.59	1.07	19.59
#FFFFFF	19.59	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000E24

Deuteranopia (green-blind)

#000A23

Tritanopia (blue-blind)

#001115

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #000b23;
/* rgb */ color: rgb(0, 11, 35);
/* oklch */ color: oklch(15.5% 0.055 257.1);

Tailwind

colors: {
  custom: {
    50: '#464c5e',
    500: '#000b23',
    950: '#000000',
  },
}

SCSS

$custom: #000b23;
$custom-light: #464c5e;
$custom-dark: #000000;

JSON

{
  "hex": "#000b23",
  "rgb": {
    "r": 0,
    "g": 11,
    "b": 35
  },
  "hsl": {
    "h": 221.143,
    "s": 100,
    "l": 6.863
  },
  "oklch": {
    "l": 0.15508,
    "c": 0.05539,
    "h": 257.1
  },
  "luminance": 0.00361
}

Semantic roles & 50–950 ramp

primary

#000B23

secondary

#6C5013

accent

#BC29FF

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000104

muted

#777779

Preview Lab

Preview with #000B23

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

Preview Lab → · Contrast checker → · Palette generator →