#000017#000017

#000017 is a very dark, moderate blue. Relative luminance 0.001; OKLCH L 9.2% C 0.064 H 264.1°. Best body text is #FFFFFF at 20.74:1 contrast (WCAG AA passes).

Color values

HEX	#000017
RGB	rgb(0, 0, 23)
HSL	hsl(240, 100%, 5%)
HSV	hsv(240, 100%, 9%)
CMYK	cmyk(100%, 100%, 0%, 91%)
CIE-LAB	lab(0.56, 3.93, -10.68)
CIE-LCH	lch(0.56, 11.38, 290.18°)
OKLab	oklab(9.25% -0.0066 -0.0637)
OKLCH	oklch(9.25% 0.064 264.1)
XYZ	xyz(0.1546, 0.0618, 0.8142)
Luminance	0.0006 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#000017 #171700

analogous

#000C17 #000017 #0C0017

triadic

#000017 #170000 #001700

tetradic

#000017 #17000C #171700 #00170C

square

#000017 #17000C #171700 #00170C

split-complementary

#000017 #170C00 #0C1700

monochromatic

#00001F #00001F #00001F #000054 #000091

Accessibility & contrast

On white

20.74

#000017 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.01

#000017 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #000017

20.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##000017	#FFFFFF	#000000	##FFFFFF
##000017	1.00	20.74	1.01	20.74
#FFFFFF	20.74	1.00	21.00	1.00
#000000	1.01	21.00	1.00	21.00
##FFFFFF	20.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000318

Deuteranopia (green-blind)

#000117

Tritanopia (blue-blind)

#000409

Achromatopsia (no color)

#020202

Design tokens & code

CSS

--color: #000017;
/* rgb */ color: rgb(0, 0, 23);
/* oklch */ color: oklch(9.2% 0.064 264.1);

Tailwind

colors: {
  custom: {
    50: '#464753',
    500: '#000017',
    950: '#000000',
  },
}

SCSS

$custom: #000017;
$custom-light: #464753;
$custom-dark: #000000;

JSON

{
  "hex": "#000017",
  "rgb": {
    "r": 0,
    "g": 0,
    "b": 23
  },
  "hsl": {
    "h": 240,
    "s": 100,
    "l": 4.51
  },
  "oklch": {
    "l": 0.09249,
    "c": 0.06409,
    "h": 264.1
  },
  "luminance": 0.00062
}

Semantic roles & 50–950 ramp

primary

#000017

secondary

#626211

accent

#FF29FF

background

#F3F3F4

surface

#E5E5E7

border

#C1C1C3

text

#000002

muted

#777778

Preview Lab

Preview with #000017

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

Preview Lab → · Contrast checker → · Palette generator →