#00181D#00181D

#00181D is a very dark, muted cyan. Relative luminance 0.007; OKLCH L 19.2% C 0.034 H 212.4°. Best body text is #FFFFFF at 18.29:1 contrast (WCAG AA passes).

Color values

HEX	#00181D
RGB	rgb(0, 24, 29)
HSL	hsl(190, 100%, 6%)
HSV	hsv(190, 100%, 11%)
CMYK	cmyk(100%, 17.2%, 0%, 88.6%)
CIE-LAB	lab(6.70, -6.43, -6.29)
CIE-LCH	lch(6.70, 8.99, 224.41°)
OKLab	oklab(19.19% -0.0283 -0.018)
OKLCH	oklch(19.19% 0.034 212.4)
XYZ	xyz(0.5483, 0.7419, 1.2765)
Luminance	0.0074 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00181D #1D0500

analogous

#001D13 #00181D #00091D

triadic

#00181D #1D0018 #181D00

tetradic

#00181D #13001D #1D0500 #091D00

square

#00181D #13001D #1D0500 #091D00

split-complementary

#00181D #1D0009 #1D1300

monochromatic

#00191F #00191F #00191F #004B5A #007D97

Accessibility & contrast

On white

18.29

#00181D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#00181D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00181D

18.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00181D	#FFFFFF	#000000	##FFFFFF
##00181D	1.00	18.29	1.15	18.29
#FFFFFF	18.29	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14171D

Deuteranopia (green-blind)

#10131D

Tritanopia (blue-blind)

#001A1A

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #00181d;
/* rgb */ color: rgb(0, 24, 29);
/* oklch */ color: oklch(19.2% 0.034 212.4);

Tailwind

colors: {
  custom: {
    50: '#465458',
    500: '#00181d',
    950: '#000000',
  },
}

SCSS

$custom: #00181d;
$custom-light: #465458;
$custom-dark: #000000;

JSON

{
  "hex": "#00181d",
  "rgb": {
    "r": 0,
    "g": 24,
    "b": 29
  },
  "hsl": {
    "h": 190.345,
    "s": 100,
    "l": 5.686
  },
  "oklch": {
    "l": 0.19193,
    "c": 0.03351,
    "h": 212.4
  },
  "luminance": 0.00742
}

Semantic roles & 50–950 ramp

primary

#00181D

secondary

#672112

accent

#4E29FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000203

muted

#767878

Preview Lab

Preview with #00181D

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

Preview Lab → · Contrast checker → · Palette generator →