#173585#173585

#173585 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.1% C 0.139 H 264.6°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#173585
RGB	rgb(23, 53, 133)
HSL	hsl(224, 71%, 31%)
HSV	hsv(224, 83%, 52%)
CMYK	cmyk(82.7%, 60.2%, 0%, 47.8%)
CIE-LAB	lab(25.02, 20.71, -47.92)
CIE-LCH	lch(25.02, 52.21, 293.37°)
OKLab	oklab(36.12% -0.013 -0.1385)
OKLCH	oklch(36.12% 0.139 264.6)
XYZ	xyz(5.8586, 4.4211, 22.7303)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173585 #856717

analogous

#176C85 #173585 #301785

triadic

#173585 #851735 #358517

tetradic

#173585 #85176C #856717 #178530

square

#173585 #85176C #856717 #178530

split-complementary

#173585 #853017 #6C8517

monochromatic

#050B1D #0E2051 #173585 #204AB9 #3A66DD

Accessibility & contrast

On white

11.14

#173585 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#173585 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173585

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173585	#FFFFFF	#000000	##FFFFFF
##173585	1.00	11.14	1.88	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004188

Deuteranopia (green-blind)

#003683

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173585;
/* rgb */ color: rgb(23, 53, 133);
/* oklch */ color: oklch(36.1% 0.139 264.6);

Tailwind

colors: {
  custom: {
    50: '#686ba9',
    500: '#173585',
    950: '#000000',
  },
}

SCSS

$custom: #173585;
$custom-light: #686ba9;
$custom-dark: #000000;

JSON

{
  "hex": "#173585",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 133
  },
  "hsl": {
    "h": 223.636,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.3612,
    "c": 0.13911,
    "h": 264.6
  },
  "luminance": 0.04422
}

Semantic roles & 50–950 ramp

primary

#173585

secondary

#B9983F

accent

#BD3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #173585

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

Preview Lab → · Contrast checker → · Palette generator →