#173690#173690

#173690 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.153 H 265.0°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#173690
RGB	rgb(23, 54, 144)
HSL	hsl(225, 72%, 33%)
HSV	hsv(225, 84%, 56%)
CMYK	cmyk(84%, 62.5%, 0%, 43.5%)
CIE-LAB	lab(26.25, 24.46, -52.74)
CIE-LCH	lch(26.25, 58.13, 294.89°)
OKLab	oklab(37.34% -0.0133 -0.1526)
OKLCH	oklch(37.34% 0.153 265)
XYZ	xyz(6.7048, 4.8333, 26.9597)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173690 #907117

analogous

#177290 #173690 #341790

triadic

#173690 #901736 #369017

tetradic

#173690 #901772 #907117 #179034

square

#173690 #901772 #907117 #179034

split-complementary

#173690 #903417 #729017

monochromatic

#060E26 #0F225B #173690 #1F4AC5 #416AE1

Accessibility & contrast

On white

10.68

#173690 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#173690 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173690

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173690	#FFFFFF	#000000	##FFFFFF
##173690	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004493

Deuteranopia (green-blind)

#00398E

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173690;
/* rgb */ color: rgb(23, 54, 144);
/* oklch */ color: oklch(37.3% 0.153 265.0);

Tailwind

colors: {
  custom: {
    50: '#6b6cb1',
    500: '#173690',
    950: '#000000',
  },
}

SCSS

$custom: #173690;
$custom-light: #6b6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#173690",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 144
  },
  "hsl": {
    "h": 224.628,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37342,
    "c": 0.15317,
    "h": 265
  },
  "luminance": 0.04834
}

Semantic roles & 50–950 ramp

primary

#173690

secondary

#C1A042

accent

#C039EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173690

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

Preview Lab → · Contrast checker → · Palette generator →