#00151B#00151B

#00151B is a very dark, muted cyan. Relative luminance 0.006; OKLCH L 18.1% C 0.032 H 217.3°. Best body text is #FFFFFF at 18.70:1 contrast (WCAG AA passes).

Color values

HEX	#00151B
RGB	rgb(0, 21, 27)
HSL	hsl(193, 100%, 5%)
HSV	hsv(193, 100%, 11%)
CMYK	cmyk(100%, 22.2%, 0%, 89.4%)
CIE-LAB	lab(5.56, -4.88, -6.47)
CIE-LCH	lch(5.56, 8.10, 232.98°)
OKLab	oklab(18.06% -0.0257 -0.0196)
OKLCH	oklch(18.06% 0.032 217.3)
XYZ	xyz(0.4659, 0.6154, 1.1309)
Luminance	0.0062 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00151B #1B0600

analogous

#001B13 #00151B #00071B

triadic

#00151B #1B0015 #151B00

tetradic

#00151B #13001B #1B0600 #071B00

square

#00151B #13001B #1B0600 #071B00

split-complementary

#00151B #1B0007 #1B1300

monochromatic

#00181F #00181F #00181F #004558 #007495

Accessibility & contrast

On white

18.70

#00151B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#00151B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00151B

18.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00151B	#FFFFFF	#000000	##FFFFFF
##00151B	1.00	18.70	1.12	18.70
#FFFFFF	18.70	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11141B

Deuteranopia (green-blind)

#0D111B

Tritanopia (blue-blind)

#001717

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #00151b;
/* rgb */ color: rgb(0, 21, 27);
/* oklch */ color: oklch(18.1% 0.032 217.3);

Tailwind

colors: {
  custom: {
    50: '#465257',
    500: '#00151b',
    950: '#000000',
  },
}

SCSS

$custom: #00151b;
$custom-light: #465257;
$custom-dark: #000000;

JSON

{
  "hex": "#00151b",
  "rgb": {
    "r": 0,
    "g": 21,
    "b": 27
  },
  "hsl": {
    "h": 193.333,
    "s": 100,
    "l": 5.294
  },
  "oklch": {
    "l": 0.18055,
    "c": 0.0323,
    "h": 217.3
  },
  "luminance": 0.00615
}

Semantic roles & 50–950 ramp

primary

#00151B

secondary

#652412

accent

#5829FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000203

muted

#767878

Preview Lab

Preview with #00151B

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

Preview Lab → · Contrast checker → · Palette generator →