#173688#173688

#173688 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.6% C 0.142 H 264.5°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#173688
RGB	rgb(23, 54, 136)
HSL	hsl(224, 71%, 31%)
HSV	hsv(224, 83%, 53%)
CMYK	cmyk(83.1%, 60.3%, 0%, 46.7%)
CIE-LAB	lab(25.56, 21.23, -48.92)
CIE-LCH	lch(25.56, 53.33, 293.46°)
OKLab	oklab(36.6% -0.0136 -0.1414)
OKLCH	oklch(36.6% 0.142 264.5)
XYZ	xyz(6.1149, 4.5973, 23.8529)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173688 #886917

analogous

#176E88 #173688 #301788

triadic

#173688 #881736 #368817

tetradic

#173688 #88176E #886917 #178830

square

#173688 #88176E #886917 #178830

split-complementary

#173688 #883017 #6E8817

monochromatic

#050C1F #0E2154 #173688 #204BBC #3B68DE

Accessibility & contrast

On white

10.94

#173688 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#173688 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173688

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173688	#FFFFFF	#000000	##FFFFFF
##173688	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428B

Deuteranopia (green-blind)

#003886

Tritanopia (blue-blind)

#004B59

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173688;
/* rgb */ color: rgb(23, 54, 136);
/* oklch */ color: oklch(36.6% 0.142 264.5);

Tailwind

colors: {
  custom: {
    50: '#696cab',
    500: '#173688',
    950: '#000000',
  },
}

SCSS

$custom: #173688;
$custom-light: #696cab;
$custom-dark: #000000;

JSON

{
  "hex": "#173688",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 136
  },
  "hsl": {
    "h": 223.54,
    "s": 71.069,
    "l": 31.176
  },
  "oklch": {
    "l": 0.36603,
    "c": 0.14205,
    "h": 264.5
  },
  "luminance": 0.04598
}

Semantic roles & 50–950 ramp

primary

#173688

secondary

#BC9A3F

accent

#BC3AEE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #173688

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

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