#173388#173388

#173388 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.146 H 265.4°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#173388
RGB	rgb(23, 51, 136)
HSL	hsl(225, 71%, 31%)
HSV	hsv(225, 83%, 53%)
CMYK	cmyk(83.1%, 62.5%, 0%, 46.7%)
CIE-LAB	lab(24.72, 23.33, -50.28)
CIE-LCH	lch(24.72, 55.43, 294.89°)
OKLab	oklab(35.98% -0.0117 -0.1454)
OKLCH	oklch(35.98% 0.146 265.4)
XYZ	xyz(5.9795, 4.3267, 23.8078)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173388 #886C17

analogous

#176B88 #173388 #331788

triadic

#173388 #881733 #338817

tetradic

#173388 #88176B #886C17 #178833

square

#173388 #88176B #886C17 #178833

split-complementary

#173388 #883317 #6B8817

monochromatic

#050C1F #0E1F54 #173388 #2047BC #3B64DE

Accessibility & contrast

On white

11.26

#173388 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173388 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173388

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173388	#FFFFFF	#000000	##FFFFFF
##173388	1.00	11.26	1.87	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408B

Deuteranopia (green-blind)

#003686

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173388;
/* rgb */ color: rgb(23, 51, 136);
/* oklch */ color: oklch(36.0% 0.146 265.4);

Tailwind

colors: {
  custom: {
    50: '#696aab',
    500: '#173388',
    950: '#000000',
  },
}

SCSS

$custom: #173388;
$custom-light: #696aab;
$custom-dark: #000000;

JSON

{
  "hex": "#173388",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 136
  },
  "hsl": {
    "h": 225.133,
    "s": 71.069,
    "l": 31.176
  },
  "oklch": {
    "l": 0.35982,
    "c": 0.1459,
    "h": 265.4
  },
  "luminance": 0.04327
}

Semantic roles & 50–950 ramp

primary

#173388

secondary

#BC9D3F

accent

#C13AEE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #173388

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

Preview Lab → · Contrast checker → · Palette generator →