#05183A#05183A

#05183A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.7% C 0.071 H 260.4°. Best body text is #FFFFFF at 17.53:1 contrast (WCAG AA passes).

Color values

HEX	#05183A
RGB	rgb(5, 24, 58)
HSL	hsl(218, 84%, 12%)
HSV	hsv(218, 91%, 23%)
CMYK	cmyk(91.4%, 58.6%, 0%, 77.3%)
CIE-LAB	lab(8.92, 7.48, -24.26)
CIE-LCH	lch(8.92, 25.38, 287.14°)
OKLab	oklab(21.73% -0.0118 -0.0698)
OKLCH	oklch(21.73% 0.071 260.4)
XYZ	xyz(1.1527, 0.9909, 4.1327)
Luminance	0.0099 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05183A #3A2705

analogous

#05323A #05183A #0D053A

triadic

#05183A #3A0518 #183A05

tetradic

#05183A #3A0532 #3A2705 #053A0D

square

#05183A #3A0532 #3A2705 #053A0D

split-complementary

#05183A #3A0D05 #323A05

monochromatic

#020C1C #020C1C #05183A #0A2F72 #0F47AB

Accessibility & contrast

On white

17.53

#05183A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#05183A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05183A

17.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05183A	#FFFFFF	#000000	##FFFFFF
##05183A	1.00	17.53	1.20	17.53
#FFFFFF	17.53	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#041C3B

Deuteranopia (green-blind)

#001739

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #05183a;
/* rgb */ color: rgb(5, 24, 58);
/* oklch */ color: oklch(21.7% 0.071 260.4);

Tailwind

colors: {
  custom: {
    50: '#4f5470',
    500: '#05183a',
    950: '#000000',
  },
}

SCSS

$custom: #05183a;
$custom-light: #4f5470;
$custom-dark: #000000;

JSON

{
  "hex": "#05183a",
  "rgb": {
    "r": 5,
    "g": 24,
    "b": 58
  },
  "hsl": {
    "h": 218.491,
    "s": 84.127,
    "l": 12.353
  },
  "oklch": {
    "l": 0.21725,
    "c": 0.07084,
    "h": 260.4
  },
  "luminance": 0.00991
}

Semantic roles & 50–950 ramp

primary

#05183A

secondary

#7B5A20

accent

#B12DFA

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #05183A

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

Preview Lab → · Contrast checker → · Palette generator →