#05182C#05182C

#05182C is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.5% C 0.047 H 251.3°. Best body text is #FFFFFF at 17.90:1 contrast (WCAG AA passes).

Color values

HEX	#05182C
RGB	rgb(5, 24, 44)
HSL	hsl(211, 80%, 10%)
HSV	hsv(211, 89%, 17%)
CMYK	cmyk(88.6%, 45.5%, 0%, 82.7%)
CIE-LAB	lab(7.83, 0.79, -15.79)
CIE-LCH	lch(7.83, 15.81, 272.88°)
OKLab	oklab(20.54% -0.0152 -0.045)
OKLCH	oklch(20.54% 0.047 251.3)
XYZ	xyz(0.8437, 0.8673, 2.5053)
Luminance	0.0087 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05182C #2C1905

analogous

#052C2C #05182C #05052C

triadic

#05182C #2C0518 #182C05

tetradic

#05182C #2C052C #2C1905 #052C05

square

#05182C #2C052C #2C1905 #052C05

split-complementary

#05182C #2C0505 #2C2C05

monochromatic

#030F1B #030F1B #05182C #0B3663 #11549A

Accessibility & contrast

On white

17.90

#05182C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#05182C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05182C

17.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05182C	#FFFFFF	#000000	##FFFFFF
##05182C	1.00	17.90	1.17	17.90
#FFFFFF	17.90	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F192D

Deuteranopia (green-blind)

#09162C

Tritanopia (blue-blind)

#001D1F

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #05182c;
/* rgb */ color: rgb(5, 24, 44);
/* oklch */ color: oklch(20.5% 0.047 251.3);

Tailwind

colors: {
  custom: {
    50: '#4b5465',
    500: '#05182c',
    950: '#000000',
  },
}

SCSS

$custom: #05182c;
$custom-light: #4b5465;
$custom-dark: #000000;

JSON

{
  "hex": "#05182c",
  "rgb": {
    "r": 5,
    "g": 24,
    "b": 44
  },
  "hsl": {
    "h": 210.769,
    "s": 79.592,
    "l": 9.608
  },
  "oklch": {
    "l": 0.20539,
    "c": 0.04749,
    "h": 251.3
  },
  "luminance": 0.00867
}

Semantic roles & 50–950 ramp

primary

#05182C

secondary

#6E471F

accent

#9632F6

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #05182C

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

Preview Lab → · Contrast checker → · Palette generator →