#05182B#05182B

#05182B is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.5% C 0.046 H 250.1°. Best body text is #FFFFFF at 17.92:1 contrast (WCAG AA passes).

Color values

HEX	#05182B
RGB	rgb(5, 24, 43)
HSL	hsl(210, 79%, 9%)
HSV	hsv(210, 88%, 17%)
CMYK	cmyk(88.4%, 44.2%, 0%, 83.1%)
CIE-LAB	lab(7.77, 0.32, -15.16)
CIE-LCH	lch(7.77, 15.16, 271.21°)
OKLab	oklab(20.46% -0.0156 -0.0431)
OKLCH	oklch(20.46% 0.046 250.1)
XYZ	xyz(0.8251, 0.8599, 2.4075)
Luminance	0.0086 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05182B #2B1805

analogous

#052B2B #05182B #05052B

triadic

#05182B #2B0518 #182B05

tetradic

#05182B #2B052B #2B1805 #052B05

square

#05182B #2B052B #2B1805 #052B05

split-complementary

#05182B #2B0505 #2B2B05

monochromatic

#030F1B #030F1B #05182B #0B3762 #125599

Accessibility & contrast

On white

17.92

#05182B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#05182B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05182B

17.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05182B	#FFFFFF	#000000	##FFFFFF
##05182B	1.00	17.92	1.17	17.92
#FFFFFF	17.92	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F192C

Deuteranopia (green-blind)

#0A152B

Tritanopia (blue-blind)

#001D1F

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #05182b;
/* rgb */ color: rgb(5, 24, 43);
/* oklch */ color: oklch(20.5% 0.046 250.1);

Tailwind

colors: {
  custom: {
    50: '#4a5464',
    500: '#05182b',
    950: '#000000',
  },
}

SCSS

$custom: #05182b;
$custom-light: #4a5464;
$custom-dark: #000000;

JSON

{
  "hex": "#05182b",
  "rgb": {
    "r": 5,
    "g": 24,
    "b": 43
  },
  "hsl": {
    "h": 210,
    "s": 79.167,
    "l": 9.412
  },
  "oklch": {
    "l": 0.20463,
    "c": 0.04585,
    "h": 250.1
  },
  "luminance": 0.0086
}

Semantic roles & 50–950 ramp

primary

#05182B

secondary

#6D461F

accent

#9432F6

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #05182B

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

Preview Lab → · Contrast checker → · Palette generator →