#05171B#05171B

#05171B is a very dark, muted cyan. Relative luminance 0.007; OKLCH L 19.1% C 0.026 H 213.7°. Best body text is #FFFFFF at 18.34:1 contrast (WCAG AA passes).

Color values

HEX	#05171B
RGB	rgb(5, 23, 27)
HSL	hsl(191, 69%, 6%)
HSV	hsv(191, 81%, 11%)
CMYK	cmyk(81.5%, 14.8%, 0%, 89.4%)
CIE-LAB	lab(6.54, -4.98, -4.97)
CIE-LCH	lch(6.54, 7.04, 224.98°)
OKLab	oklab(19.11% -0.0214 -0.0143)
OKLCH	oklch(19.11% 0.026 213.7)
XYZ	xyz(0.5667, 0.7241, 1.1466)
Luminance	0.0072 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05171B #1B0905

analogous

#051B14 #05171B #050C1B

triadic

#05171B #1B0517 #171B05

tetradic

#05171B #14051B #1B0905 #0C1B05

square

#05171B #14051B #1B0905 #0C1B05

split-complementary

#05171B #1B050C #1B1405

monochromatic

#05161A #05161A #05171B #0F434F #186F82

Accessibility & contrast

On white

18.34

#05171B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#05171B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05171B

18.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05171B	#FFFFFF	#000000	##FFFFFF
##05171B	1.00	18.34	1.14	18.34
#FFFFFF	18.34	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14161B

Deuteranopia (green-blind)

#11131B

Tritanopia (blue-blind)

#001918

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #05171b;
/* rgb */ color: rgb(5, 23, 27);
/* oklch */ color: oklch(19.1% 0.026 213.7);

Tailwind

colors: {
  custom: {
    50: '#485357',
    500: '#05171b',
    950: '#000000',
  },
}

SCSS

$custom: #05171b;
$custom-light: #485357;
$custom-dark: #000000;

JSON

{
  "hex": "#05171b",
  "rgb": {
    "r": 5,
    "g": 23,
    "b": 27
  },
  "hsl": {
    "h": 190.909,
    "s": 68.75,
    "l": 6.275
  },
  "oklch": {
    "l": 0.19109,
    "c": 0.02575,
    "h": 213.7
  },
  "luminance": 0.00724
}

Semantic roles & 50–950 ramp

primary

#05171B

secondary

#5C2B20

accent

#5C3CEC

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000203

muted

#777878

Preview Lab

Preview with #05171B

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

Preview Lab → · Contrast checker → · Palette generator →