#00091B#00091B

#00091B is a very dark, muted blue. Relative luminance 0.003; OKLCH L 14.1% C 0.045 H 253.9°. Best body text is #FFFFFF at 19.91:1 contrast (WCAG AA passes).

Color values

HEX	#00091B
RGB	rgb(0, 9, 27)
HSL	hsl(220, 100%, 5%)
HSV	hsv(220, 100%, 11%)
CMYK	cmyk(100%, 66.7%, 0%, 89.4%)
CIE-LAB	lab(2.48, 1.41, -11.03)
CIE-LCH	lch(2.48, 11.12, 277.30°)
OKLab	oklab(14.08% -0.0124 -0.0429)
OKLCH	oklch(14.08% 0.045 253.9)
XYZ	xyz(0.2954, 0.2745, 1.0741)
Luminance	0.0027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00091B #1B1200

analogous

#00161B #00091B #04001B

triadic

#00091B #1B0009 #091B00

tetradic

#00091B #1B0016 #1B1200 #001B04

square

#00091B #1B0016 #1B1200 #001B04

split-complementary

#00091B #1B0400 #161B00

monochromatic

#000A1F #000A1F #000A1F #001D58 #003295

Accessibility & contrast

On white

19.91

#00091B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#00091B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00091B

19.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00091B	#FFFFFF	#000000	##FFFFFF
##00091B	1.00	19.91	1.06	19.91
#FFFFFF	19.91	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#020B1C

Deuteranopia (green-blind)

#00081B

Tritanopia (blue-blind)

#000D10

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #00091b;
/* rgb */ color: rgb(0, 9, 27);
/* oklch */ color: oklch(14.1% 0.045 253.9);

Tailwind

colors: {
  custom: {
    50: '#464b57',
    500: '#00091b',
    950: '#000000',
  },
}

SCSS

$custom: #00091b;
$custom-light: #464b57;
$custom-dark: #000000;

JSON

{
  "hex": "#00091b",
  "rgb": {
    "r": 0,
    "g": 9,
    "b": 27
  },
  "hsl": {
    "h": 220,
    "s": 100,
    "l": 5.294
  },
  "oklch": {
    "l": 0.14076,
    "c": 0.04463,
    "h": 253.9
  },
  "luminance": 0.00275
}

Semantic roles & 50–950 ramp

primary

#00091B

secondary

#654912

accent

#B829FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000103

muted

#767778

Preview Lab

Preview with #00091B

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

Preview Lab → · Contrast checker → · Palette generator →