#000018#000018

#000018 is a very dark, moderate blue. Relative luminance 0.001; OKLCH L 9.4% C 0.065 H 264.1°. Best body text is #FFFFFF at 20.73:1 contrast (WCAG AA passes).

Color values

HEX	#000018
RGB	rgb(0, 0, 24)
HSL	hsl(240, 100%, 5%)
HSV	hsv(240, 100%, 9%)
CMYK	cmyk(100%, 100%, 0%, 90.6%)
CIE-LAB	lab(0.60, 4.18, -11.39)
CIE-LCH	lch(0.60, 12.13, 290.18°)
OKLab	oklab(9.45% -0.0068 -0.0651)
OKLCH	oklch(9.45% 0.065 264.1)
XYZ	xyz(0.1648, 0.0659, 0.8680)
Luminance	0.0007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#000018 #181800

analogous

#000C18 #000018 #0C0018

triadic

#000018 #180000 #001800

tetradic

#000018 #18000C #181800 #00180C

square

#000018 #18000C #181800 #00180C

split-complementary

#000018 #180C00 #0C1800

monochromatic

#00001F #00001F #00001F #000055 #000092

Accessibility & contrast

On white

20.73

#000018 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.01

#000018 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #000018

20.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##000018	#FFFFFF	#000000	##FFFFFF
##000018	1.00	20.73	1.01	20.73
#FFFFFF	20.73	1.00	21.00	1.00
#000000	1.01	21.00	1.00	21.00
##FFFFFF	20.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000319

Deuteranopia (green-blind)

#000118

Tritanopia (blue-blind)

#000409

Achromatopsia (no color)

#020202

Design tokens & code

CSS

--color: #000018;
/* rgb */ color: rgb(0, 0, 24);
/* oklch */ color: oklch(9.4% 0.065 264.1);

Tailwind

colors: {
  custom: {
    50: '#464754',
    500: '#000018',
    950: '#000000',
  },
}

SCSS

$custom: #000018;
$custom-light: #464754;
$custom-dark: #000000;

JSON

{
  "hex": "#000018",
  "rgb": {
    "r": 0,
    "g": 0,
    "b": 24
  },
  "hsl": {
    "h": 240,
    "s": 100,
    "l": 4.706
  },
  "oklch": {
    "l": 0.09449,
    "c": 0.06547,
    "h": 264.1
  },
  "luminance": 0.00066
}

Semantic roles & 50–950 ramp

primary

#000018

secondary

#626211

accent

#FF29FF

background

#F3F3F4

surface

#E5E5E7

border

#C1C1C3

text

#000002

muted

#777778

Preview Lab

Preview with #000018

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

Preview Lab → · Contrast checker → · Palette generator →