#173088#173088

#173088 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.4% C 0.150 H 266.2°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#173088
RGB	rgb(23, 48, 136)
HSL	hsl(227, 71%, 31%)
HSV	hsv(227, 83%, 53%)
CMYK	cmyk(83.1%, 64.7%, 0%, 46.7%)
CIE-LAB	lab(23.91, 25.41, -51.61)
CIE-LCH	lch(23.91, 57.52, 296.22°)
OKLab	oklab(35.38% -0.0099 -0.1494)
OKLCH	oklch(35.38% 0.15 266.2)
XYZ	xyz(5.8527, 4.0729, 23.7655)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173088 #886F17

analogous

#176888 #173088 #361788

triadic

#173088 #881730 #308817

tetradic

#173088 #881768 #886F17 #178836

square

#173088 #881768 #886F17 #178836

split-complementary

#173088 #883617 #688817

monochromatic

#050B1F #0E1E54 #173088 #2042BC #3B5FDE

Accessibility & contrast

On white

11.57

#173088 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#173088 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173088

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173088	#FFFFFF	#000000	##FFFFFF
##173088	1.00	11.57	1.81	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8B

Deuteranopia (green-blind)

#003486

Tritanopia (blue-blind)

#004757

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173088;
/* rgb */ color: rgb(23, 48, 136);
/* oklch */ color: oklch(35.4% 0.150 266.2);

Tailwind

colors: {
  custom: {
    50: '#6a68ac',
    500: '#173088',
    950: '#000000',
  },
}

SCSS

$custom: #173088;
$custom-light: #6a68ac;
$custom-dark: #000000;

JSON

{
  "hex": "#173088",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 136
  },
  "hsl": {
    "h": 226.726,
    "s": 71.069,
    "l": 31.176
  },
  "oklch": {
    "l": 0.35379,
    "c": 0.14969,
    "h": 266.2
  },
  "luminance": 0.04074
}

Semantic roles & 50–950 ramp

primary

#173088

secondary

#BCA03F

accent

#C63AEE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #173088

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

Preview Lab → · Contrast checker → · Palette generator →