#173790#173790

#173790 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.5% C 0.152 H 264.7°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).

Color values

HEX	#173790
RGB	rgb(23, 55, 144)
HSL	hsl(224, 72%, 33%)
HSV	hsv(224, 84%, 56%)
CMYK	cmyk(84%, 61.8%, 0%, 43.5%)
CIE-LAB	lab(26.53, 23.77, -52.29)
CIE-LCH	lch(26.53, 57.44, 294.45°)
OKLab	oklab(37.55% -0.0139 -0.1513)
OKLCH	oklch(37.55% 0.152 264.7)
XYZ	xyz(6.7518, 4.9273, 26.9754)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173790 #907017

analogous

#177490 #173790 #331790

triadic

#173790 #901737 #379017

tetradic

#173790 #901774 #907017 #179033

square

#173790 #901774 #907017 #179033

split-complementary

#173790 #903317 #749017

monochromatic

#060F26 #0F235B #173790 #1F4BC5 #416BE1

Accessibility & contrast

On white

10.58

#173790 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#173790 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173790

10.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173790	#FFFFFF	#000000	##FFFFFF
##173790	1.00	10.58	1.99	10.58
#FFFFFF	10.58	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004593

Deuteranopia (green-blind)

#00398E

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #173790;
/* rgb */ color: rgb(23, 55, 144);
/* oklch */ color: oklch(37.5% 0.152 264.7);

Tailwind

colors: {
  custom: {
    50: '#6b6db1',
    500: '#173790',
    950: '#000000',
  },
}

SCSS

$custom: #173790;
$custom-light: #6b6db1;
$custom-dark: #000000;

JSON

{
  "hex": "#173790",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 144
  },
  "hsl": {
    "h": 224.132,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37545,
    "c": 0.15191,
    "h": 264.7
  },
  "luminance": 0.04928
}

Semantic roles & 50–950 ramp

primary

#173790

secondary

#C19F42

accent

#BF39EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173790

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

Preview Lab → · Contrast checker → · Palette generator →