#05173B#05173B

#05173B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.6% C 0.074 H 261.6°. Best body text is #FFFFFF at 17.61:1 contrast (WCAG AA passes).

Color values

HEX	#05173B
RGB	rgb(5, 23, 59)
HSL	hsl(220, 84%, 13%)
HSV	hsv(220, 92%, 23%)
CMYK	cmyk(91.5%, 61%, 0%, 76.9%)
CIE-LAB	lab(8.66, 8.76, -25.39)
CIE-LCH	lch(8.66, 26.86, 289.04°)
OKLab	oklab(21.56% -0.0108 -0.0732)
OKLCH	oklch(21.56% 0.074 261.6)
XYZ	xyz(1.1581, 0.9607, 4.2612)
Luminance	0.0096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05173B #3B2905

analogous

#05323B #05173B #0E053B

triadic

#05173B #3B0517 #173B05

tetradic

#05173B #3B0532 #3B2905 #053B0E

square

#05173B #3B0532 #3B2905 #053B0E

split-complementary

#05173B #3B0E05 #323B05

monochromatic

#020B1C #020B1C #05173B #0A2D73 #0F43AC

Accessibility & contrast

On white

17.61

#05173B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#05173B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05173B

17.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05173B	#FFFFFF	#000000	##FFFFFF
##05173B	1.00	17.61	1.19	17.61
#FFFFFF	17.61	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011B3C

Deuteranopia (green-blind)

#00163A

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #05173b;
/* rgb */ color: rgb(5, 23, 59);
/* oklch */ color: oklch(21.6% 0.074 261.6);

Tailwind

colors: {
  custom: {
    50: '#4f5371',
    500: '#05173b',
    950: '#000000',
  },
}

SCSS

$custom: #05173b;
$custom-light: #4f5371;
$custom-dark: #000000;

JSON

{
  "hex": "#05173b",
  "rgb": {
    "r": 5,
    "g": 23,
    "b": 59
  },
  "hsl": {
    "h": 220,
    "s": 84.375,
    "l": 12.549
  },
  "oklch": {
    "l": 0.21557,
    "c": 0.07399,
    "h": 261.6
  },
  "luminance": 0.00961
}

Semantic roles & 50–950 ramp

primary

#05173B

secondary

#7C5D20

accent

#B62DFB

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #05173B

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

Preview Lab → · Contrast checker → · Palette generator →