#00181B#00181B

#00181B is a very dark, muted teal. Relative luminance 0.007; OKLCH L 19.1% C 0.033 H 205.6°. Best body text is #FFFFFF at 18.32:1 contrast (WCAG AA passes).

Color values

HEX	#00181B
RGB	rgb(0, 24, 27)
HSL	hsl(187, 100%, 5%)
HSV	hsv(187, 100%, 11%)
CMYK	cmyk(100%, 11.1%, 0%, 89.4%)
CIE-LAB	lab(6.61, -7.03, -4.89)
CIE-LCH	lch(6.61, 8.57, 214.85°)
OKLab	oklab(19.08% -0.0294 -0.0141)
OKLCH	oklch(19.08% 0.033 205.6)
XYZ	xyz(0.5244, 0.7323, 1.1504)
Luminance	0.0073 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00181B #1B0300

analogous

#001B10 #00181B #000A1B

triadic

#00181B #1B0018 #181B00

tetradic

#00181B #10001B #1B0300 #0A1B00

square

#00181B #10001B #1B0300 #0A1B00

split-complementary

#00181B #1B000A #1B1000

monochromatic

#001B1F #001B1F #001B1F #004E58 #008595

Accessibility & contrast

On white

18.32

#00181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#00181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00181B

18.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00181B	#FFFFFF	#000000	##FFFFFF
##00181B	1.00	18.32	1.15	18.32
#FFFFFF	18.32	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15161B

Deuteranopia (green-blind)

#10131B

Tritanopia (blue-blind)

#001A19

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #00181b;
/* rgb */ color: rgb(0, 24, 27);
/* oklch */ color: oklch(19.1% 0.033 205.6);

Tailwind

colors: {
  custom: {
    50: '#465457',
    500: '#00181b',
    950: '#000000',
  },
}

SCSS

$custom: #00181b;
$custom-light: #465457;
$custom-dark: #000000;

JSON

{
  "hex": "#00181b",
  "rgb": {
    "r": 0,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 186.667,
    "s": 100,
    "l": 5.294
  },
  "oklch": {
    "l": 0.19082,
    "c": 0.03262,
    "h": 205.6
  },
  "luminance": 0.00732
}

Semantic roles & 50–950 ramp

primary

#00181B

secondary

#651B12

accent

#4129FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000203

muted

#767878

Preview Lab

Preview with #00181B

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

Preview Lab → · Contrast checker → · Palette generator →