#173C96#173C96

#173C96 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.154 H 263.8°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#173C96
RGB	rgb(23, 60, 150)
HSL	hsl(223, 73%, 34%)
HSV	hsv(223, 85%, 59%)
CMYK	cmyk(84.7%, 60%, 0%, 41.2%)
CIE-LAB	lab(28.42, 22.73, -52.89)
CIE-LCH	lch(28.42, 57.56, 293.26°)
OKLab	oklab(39.12% -0.0167 -0.1529)
OKLCH	oklch(39.12% 0.154 263.8)
XYZ	xyz(7.4723, 5.6150, 29.5382)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C96 #967117

analogous

#177C96 #173C96 #321796

triadic

#173C96 #96173C #3C9617

tetradic

#173C96 #96177C #967117 #179632

square

#173C96 #96177C #967117 #179632

split-complementary

#173C96 #963217 #7C9617

monochromatic

#07122C #0F2761 #173C96 #1F51CB #4573E2

Accessibility & contrast

On white

9.89

#173C96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#173C96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C96

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C96	#FFFFFF	#000000	##FFFFFF
##173C96	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004999

Deuteranopia (green-blind)

#003D94

Tritanopia (blue-blind)

#005363

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #173c96;
/* rgb */ color: rgb(23, 60, 150);
/* oklch */ color: oklch(39.1% 0.154 263.8);

Tailwind

colors: {
  custom: {
    50: '#6c71b6',
    500: '#173c96',
    950: '#000000',
  },
}

SCSS

$custom: #173c96;
$custom-light: #6c71b6;
$custom-dark: #000000;

JSON

{
  "hex": "#173c96",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 150
  },
  "hsl": {
    "h": 222.52,
    "s": 73.41,
    "l": 33.922
  },
  "oklch": {
    "l": 0.39122,
    "c": 0.15385,
    "h": 263.8
  },
  "luminance": 0.05616
}

Semantic roles & 50–950 ramp

primary

#173C96

secondary

#C39F45

accent

#BA38F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173C96

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

Preview Lab → · Contrast checker → · Palette generator →