#05183F#05183F

#05183F is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.2% C 0.079 H 261.9°. Best body text is #FFFFFF at 17.37:1 contrast (WCAG AA passes).

Color values

HEX	#05183F
RGB	rgb(5, 24, 63)
HSL	hsl(220, 85%, 13%)
HSV	hsv(220, 92%, 25%)
CMYK	cmyk(92.1%, 61.9%, 0%, 75.3%)
CIE-LAB	lab(9.36, 9.86, -27.11)
CIE-LCH	lch(9.36, 28.85, 289.98°)
OKLab	oklab(22.2% -0.0112 -0.0782)
OKLCH	oklch(22.2% 0.079 261.9)
XYZ	xyz(1.2861, 1.0443, 4.8354)
Luminance	0.0104 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05183F #3F2C05

analogous

#05353F #05183F #0F053F

triadic

#05183F #3F0518 #183F05

tetradic

#05183F #3F0535 #3F2C05 #053F0F

square

#05183F #3F0535 #3F2C05 #053F0F

split-complementary

#05183F #3F0F05 #353F05

monochromatic

#020B1C #020B1C #05183F #092E78 #0E43B0

Accessibility & contrast

On white

17.37

#05183F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#05183F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05183F

17.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05183F	#FFFFFF	#000000	##FFFFFF
##05183F	1.00	17.37	1.21	17.37
#FFFFFF	17.37	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D40

Deuteranopia (green-blind)

#00183E

Tritanopia (blue-blind)

#002228

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #05183f;
/* rgb */ color: rgb(5, 24, 63);
/* oklch */ color: oklch(22.2% 0.079 261.9);

Tailwind

colors: {
  custom: {
    50: '#505474',
    500: '#05183f',
    950: '#000000',
  },
}

SCSS

$custom: #05183f;
$custom-light: #505474;
$custom-dark: #000000;

JSON

{
  "hex": "#05183f",
  "rgb": {
    "r": 5,
    "g": 24,
    "b": 63
  },
  "hsl": {
    "h": 220.345,
    "s": 85.294,
    "l": 13.333
  },
  "oklch": {
    "l": 0.22199,
    "c": 0.07903,
    "h": 261.9
  },
  "luminance": 0.01044
}

Semantic roles & 50–950 ramp

primary

#05183F

secondary

#806020

accent

#B82CFC

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020208

muted

#78787B

Preview Lab

Preview with #05183F

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

Preview Lab → · Contrast checker → · Palette generator →