#001B28#001B28

#001B28 is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.9% C 0.043 H 232.0°. Best body text is #FFFFFF at 17.69:1 contrast (WCAG AA passes).

Color values

HEX	#001B28
RGB	rgb(0, 27, 40)
HSL	hsl(200, 100%, 8%)
HSV	hsv(200, 100%, 16%)
CMYK	cmyk(100%, 32.5%, 0%, 84.3%)
CIE-LAB	lab(8.46, -4.71, -11.87)
CIE-LCH	lch(8.46, 12.77, 248.37°)
OKLab	oklab(20.87% -0.0262 -0.0336)
OKLCH	oklch(20.87% 0.043 232)
XYZ	xyz(0.7748, 0.9370, 2.1471)
Luminance	0.0094 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#001B28 #280D00

analogous

#002821 #001B28 #000728

triadic

#001B28 #28001B #1B2800

tetradic

#001B28 #210028 #280D00 #072800

square

#001B28 #210028 #280D00 #072800

split-complementary

#001B28 #280007 #282100

monochromatic

#00151F #00151F #001B28 #004465 #006EA2

Accessibility & contrast

On white

17.69

#001B28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#001B28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #001B28

17.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##001B28	#FFFFFF	#000000	##FFFFFF
##001B28	1.00	17.69	1.19	17.69
#FFFFFF	17.69	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141B29

Deuteranopia (green-blind)

#0F1728

Tritanopia (blue-blind)

#001E1F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #001b28;
/* rgb */ color: rgb(0, 27, 40);
/* oklch */ color: oklch(20.9% 0.043 232.0);

Tailwind

colors: {
  custom: {
    50: '#475762',
    500: '#001b28',
    950: '#000000',
  },
}

SCSS

$custom: #001b28;
$custom-light: #475762;
$custom-dark: #000000;

JSON

{
  "hex": "#001b28",
  "rgb": {
    "r": 0,
    "g": 27,
    "b": 40
  },
  "hsl": {
    "h": 199.5,
    "s": 100,
    "l": 7.843
  },
  "oklch": {
    "l": 0.20865,
    "c": 0.04258,
    "h": 232
  },
  "luminance": 0.00937
}

Semantic roles & 50–950 ramp

primary

#001B28

secondary

#703214

accent

#6E29FF

background

#F4F5F5

surface

#E6E9EA

border

#C2C5C6

text

#000305

muted

#777879

Preview Lab

Preview with #001B28

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

Preview Lab → · Contrast checker → · Palette generator →