#001B17#001B17

#001B17 is a very dark, muted teal. Relative luminance 0.008; OKLCH L 19.9% C 0.036 H 181.8°. Best body text is #FFFFFF at 17.96:1 contrast (WCAG AA passes).

Color values

HEX	#001B17
RGB	rgb(0, 27, 23)
HSL	hsl(171, 100%, 5%)
HSV	hsv(171, 100%, 11%)
CMYK	cmyk(100%, 0%, 14.8%, 89.4%)
CIE-LAB	lab(7.64, -10.54, -0.34)
CIE-LCH	lch(7.64, 10.55, 181.87°)
OKLab	oklab(19.93% -0.0357 -0.0011)
OKLCH	oklch(19.93% 0.036 181.8)
XYZ	xyz(0.5465, 0.8457, 0.9449)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#001B17 #1B0004

analogous

#001B09 #001B17 #00111B

triadic

#001B17 #17001B #1B1700

tetradic

#001B17 #09001B #1B0004 #111B00

square

#001B17 #09001B #1B0004 #111B00

split-complementary

#001B17 #1B0011 #1B0900

monochromatic

#001F1A #001F1A #001F1A #00584B #00957F

Accessibility & contrast

On white

17.96

#001B17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#001B17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #001B17

17.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##001B17	#FFFFFF	#000000	##FFFFFF
##001B17	1.00	17.96	1.17	17.96
#FFFFFF	17.96	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#191917

Deuteranopia (green-blind)

#151617

Tritanopia (blue-blind)

#001C1A

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #001b17;
/* rgb */ color: rgb(0, 27, 23);
/* oklch */ color: oklch(19.9% 0.036 181.8);

Tailwind

colors: {
  custom: {
    50: '#465753',
    500: '#001b17',
    950: '#000000',
  },
}

SCSS

$custom: #001b17;
$custom-light: #465753;
$custom-dark: #000000;

JSON

{
  "hex": "#001b17",
  "rgb": {
    "r": 0,
    "g": 27,
    "b": 23
  },
  "hsl": {
    "h": 171.111,
    "s": 100,
    "l": 5.294
  },
  "oklch": {
    "l": 0.19928,
    "c": 0.03573,
    "h": 181.8
  },
  "luminance": 0.00846
}

Semantic roles & 50–950 ramp

primary

#001B17

secondary

#65121E

accent

#2949FF

background

#F3F5F4

surface

#E5E9E7

border

#C1C5C3

text

#000302

muted

#767878

Preview Lab

Preview with #001B17

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

Preview Lab → · Contrast checker → · Palette generator →