#05183C#05183C

#05183C is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.9% C 0.074 H 261.0°. Best body text is #FFFFFF at 17.47:1 contrast (WCAG AA passes).

Color values

HEX	#05183C
RGB	rgb(5, 24, 60)
HSL	hsl(219, 85%, 13%)
HSV	hsv(219, 92%, 24%)
CMYK	cmyk(91.7%, 60%, 0%, 76.5%)
CIE-LAB	lab(9.09, 8.44, -25.41)
CIE-LCH	lch(9.09, 26.77, 288.37°)
OKLab	oklab(21.91% -0.0115 -0.0732)
OKLCH	oklch(21.91% 0.074 261)
XYZ	xyz(1.2045, 1.0116, 4.4059)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05183C #3C2905

analogous

#05333C #05183C #0E053C

triadic

#05183C #3C0518 #183C05

tetradic

#05183C #3C0533 #3C2905 #053C0E

square

#05183C #3C0533 #3C2905 #053C0E

split-complementary

#05183C #3C0E05 #333C05

monochromatic

#020B1C #020B1C #05183C #0A2F74 #0E45AD

Accessibility & contrast

On white

17.47

#05183C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#05183C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05183C

17.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05183C	#FFFFFF	#000000	##FFFFFF
##05183C	1.00	17.47	1.20	17.47
#FFFFFF	17.47	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021C3D

Deuteranopia (green-blind)

#00173B

Tritanopia (blue-blind)

#002127

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #05183c;
/* rgb */ color: rgb(5, 24, 60);
/* oklch */ color: oklch(21.9% 0.074 261.0);

Tailwind

colors: {
  custom: {
    50: '#4f5472',
    500: '#05183c',
    950: '#000000',
  },
}

SCSS

$custom: #05183c;
$custom-light: #4f5472;
$custom-dark: #000000;

JSON

{
  "hex": "#05183c",
  "rgb": {
    "r": 5,
    "g": 24,
    "b": 60
  },
  "hsl": {
    "h": 219.273,
    "s": 84.615,
    "l": 12.745
  },
  "oklch": {
    "l": 0.21911,
    "c": 0.07414,
    "h": 261
  },
  "luminance": 0.01012
}

Semantic roles & 50–950 ramp

primary

#05183C

secondary

#7D5D20

accent

#B42DFB

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #05183C

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

Preview Lab → · Contrast checker → · Palette generator →