#001B1F#001B1F

#001B1F is a very dark, muted teal. Relative luminance 0.009; OKLCH L 20.3% C 0.035 H 208.0°. Best body text is #FFFFFF at 17.85:1 contrast (WCAG AA passes).

Color values

HEX	#001B1F
RGB	rgb(0, 27, 31)
HSL	hsl(188, 100%, 6%)
HSV	hsv(188, 100%, 12%)
CMYK	cmyk(100%, 12.9%, 0%, 87.8%)
CIE-LAB	lab(7.97, -8.19, -5.88)
CIE-LCH	lch(7.97, 10.08, 215.70°)
OKLab	oklab(20.32% -0.0308 -0.0164)
OKLCH	oklch(20.32% 0.035 208)
XYZ	xyz(0.6391, 0.8827, 1.4328)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#001B1F #1F0400

analogous

#001F13 #001B1F #000B1F

triadic

#001B1F #1F001B #1B1F00

tetradic

#001B1F #13001F #1F0400 #0B1F00

square

#001B1F #13001F #1F0400 #0B1F00

split-complementary

#001B1F #1F000B #1F1300

monochromatic

#001B1F #001B1F #001B1F #00505C #008699

Accessibility & contrast

On white

17.85

#001B1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#001B1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #001B1F

17.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##001B1F	#FFFFFF	#000000	##FFFFFF
##001B1F	1.00	17.85	1.18	17.85
#FFFFFF	17.85	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17191F

Deuteranopia (green-blind)

#13161F

Tritanopia (blue-blind)

#001D1C

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #001b1f;
/* rgb */ color: rgb(0, 27, 31);
/* oklch */ color: oklch(20.3% 0.035 208.0);

Tailwind

colors: {
  custom: {
    50: '#46575a',
    500: '#001b1f',
    950: '#000000',
  },
}

SCSS

$custom: #001b1f;
$custom-light: #46575a;
$custom-dark: #000000;

JSON

{
  "hex": "#001b1f",
  "rgb": {
    "r": 0,
    "g": 27,
    "b": 31
  },
  "hsl": {
    "h": 187.742,
    "s": 100,
    "l": 6.078
  },
  "oklch": {
    "l": 0.20318,
    "c": 0.03493,
    "h": 208
  },
  "luminance": 0.00883
}

Semantic roles & 50–950 ramp

primary

#001B1F

secondary

#681E12

accent

#4429FF

background

#F3F5F5

surface

#E5E9E9

border

#C1C5C5

text

#000303

muted

#767878

Preview Lab

Preview with #001B1F

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

Preview Lab → · Contrast checker → · Palette generator →