#05173A#05173A

#05173A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.5% C 0.072 H 261.3°. Best body text is #FFFFFF at 17.64:1 contrast (WCAG AA passes).

Color values

HEX	#05173A
RGB	rgb(5, 23, 58)
HSL	hsl(220, 84%, 12%)
HSV	hsv(220, 91%, 23%)
CMYK	cmyk(91.4%, 60.3%, 0%, 77.3%)
CIE-LAB	lab(8.57, 8.29, -24.81)
CIE-LCH	lch(8.57, 26.16, 288.47°)
OKLab	oklab(21.46% -0.0109 -0.0715)
OKLCH	oklch(21.46% 0.072 261.3)
XYZ	xyz(1.1324, 0.9504, 4.1259)
Luminance	0.0095 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05173A #3A2805

analogous

#05313A #05173A #0E053A

triadic

#05173A #3A0517 #173A05

tetradic

#05173A #3A0531 #3A2805 #053A0E

square

#05173A #3A0531 #3A2805 #053A0E

split-complementary

#05173A #3A0E05 #313A05

monochromatic

#020B1C #020B1C #05173A #0A2D72 #0F44AB

Accessibility & contrast

On white

17.64

#05173A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#05173A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05173A

17.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05173A	#FFFFFF	#000000	##FFFFFF
##05173A	1.00	17.64	1.19	17.64
#FFFFFF	17.64	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021B3B

Deuteranopia (green-blind)

#001639

Tritanopia (blue-blind)

#002025

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #05173a;
/* rgb */ color: rgb(5, 23, 58);
/* oklch */ color: oklch(21.5% 0.072 261.3);

Tailwind

colors: {
  custom: {
    50: '#4f5370',
    500: '#05173a',
    950: '#000000',
  },
}

SCSS

$custom: #05173a;
$custom-light: #4f5370;
$custom-dark: #000000;

JSON

{
  "hex": "#05173a",
  "rgb": {
    "r": 5,
    "g": 23,
    "b": 58
  },
  "hsl": {
    "h": 219.623,
    "s": 84.127,
    "l": 12.353
  },
  "oklch": {
    "l": 0.21462,
    "c": 0.07233,
    "h": 261.3
  },
  "luminance": 0.00951
}

Semantic roles & 50–950 ramp

primary

#05173A

secondary

#7B5C20

accent

#B52DFA

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #05173A

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

Preview Lab → · Contrast checker → · Palette generator →