#001B23#001B23

#001B23 is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.5% C 0.037 H 220.0°. Best body text is #FFFFFF at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#001B23
RGB	rgb(0, 27, 35)
HSL	hsl(194, 100%, 7%)
HSV	hsv(194, 100%, 14%)
CMYK	cmyk(100%, 22.9%, 0%, 86.3%)
CIE-LAB	lab(8.17, -6.76, -8.58)
CIE-LCH	lch(8.17, 10.92, 231.77°)
OKLab	oklab(20.55% -0.0286 -0.0241)
OKLCH	oklch(20.55% 0.037 220)
XYZ	xyz(0.6952, 0.9051, 1.7278)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#001B23 #230800

analogous

#00231A #001B23 #000A23

triadic

#001B23 #23001B #1B2300

tetradic

#001B23 #1A0023 #230800 #0A2300

square

#001B23 #1A0023 #230800 #0A2300

split-complementary

#001B23 #23000A #231A00

monochromatic

#00181F #00181F #001B23 #004A60 #00799D

Accessibility & contrast

On white

17.78

#001B23 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#001B23 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #001B23

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##001B23	#FFFFFF	#000000	##FFFFFF
##001B23	1.00	17.78	1.18	17.78
#FFFFFF	17.78	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161A23

Deuteranopia (green-blind)

#111623

Tritanopia (blue-blind)

#001E1E

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #001b23;
/* rgb */ color: rgb(0, 27, 35);
/* oklch */ color: oklch(20.5% 0.037 220.0);

Tailwind

colors: {
  custom: {
    50: '#46575d',
    500: '#001b23',
    950: '#000000',
  },
}

SCSS

$custom: #001b23;
$custom-light: #46575d;
$custom-dark: #000000;

JSON

{
  "hex": "#001b23",
  "rgb": {
    "r": 0,
    "g": 27,
    "b": 35
  },
  "hsl": {
    "h": 193.714,
    "s": 100,
    "l": 6.863
  },
  "oklch": {
    "l": 0.20547,
    "c": 0.03743,
    "h": 220
  },
  "luminance": 0.00905
}

Semantic roles & 50–950 ramp

primary

#001B23

secondary

#6C2713

accent

#5A29FF

background

#F4F5F5

surface

#E6E9E9

border

#C2C5C5

text

#000304

muted

#777879

Preview Lab

Preview with #001B23

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

Preview Lab → · Contrast checker → · Palette generator →