#05173F#05173F

#05173F is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.9% C 0.081 H 262.6°. Best body text is #FFFFFF at 17.49:1 contrast (WCAG AA passes).

Color values

HEX	#05173F
RGB	rgb(5, 23, 63)
HSL	hsl(221, 85%, 13%)
HSV	hsv(221, 92%, 25%)
CMYK	cmyk(92.1%, 63.5%, 0%, 75.3%)
CIE-LAB	lab(9.02, 10.66, -27.65)
CIE-LCH	lch(9.02, 29.63, 291.09°)
OKLab	oklab(21.95% -0.0104 -0.0798)
OKLCH	oklch(21.95% 0.081 262.6)
XYZ	xyz(1.2659, 1.0038, 4.8287)
Luminance	0.0100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05173F #3F2D05

analogous

#05343F #05173F #10053F

triadic

#05173F #3F0517 #173F05

tetradic

#05173F #3F0534 #3F2D05 #053F10

square

#05173F #3F0534 #3F2D05 #053F10

split-complementary

#05173F #3F1005 #343F05

monochromatic

#020A1C #020A1C #05173F #092C78 #0E40B0

Accessibility & contrast

On white

17.49

#05173F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#05173F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05173F

17.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05173F	#FFFFFF	#000000	##FFFFFF
##05173F	1.00	17.49	1.20	17.49
#FFFFFF	17.49	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C40

Deuteranopia (green-blind)

#00173E

Tritanopia (blue-blind)

#002128

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #05173f;
/* rgb */ color: rgb(5, 23, 63);
/* oklch */ color: oklch(21.9% 0.081 262.6);

Tailwind

colors: {
  custom: {
    50: '#515374',
    500: '#05173f',
    950: '#000000',
  },
}

SCSS

$custom: #05173f;
$custom-light: #515374;
$custom-dark: #000000;

JSON

{
  "hex": "#05173f",
  "rgb": {
    "r": 5,
    "g": 23,
    "b": 63
  },
  "hsl": {
    "h": 221.379,
    "s": 85.294,
    "l": 13.333
  },
  "oklch": {
    "l": 0.21947,
    "c": 0.08052,
    "h": 262.6
  },
  "luminance": 0.01004
}

Semantic roles & 50–950 ramp

primary

#05173F

secondary

#806220

accent

#BB2CFC

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020208

muted

#78787B

Preview Lab

Preview with #05173F

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

Preview Lab → · Contrast checker → · Palette generator →