#173373#173373

#173373 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.1% C 0.116 H 263.6°. Best body text is #FFFFFF at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#173373
RGB	rgb(23, 51, 115)
HSL	hsl(222, 67%, 27%)
HSV	hsv(222, 80%, 45%)
CMYK	cmyk(80%, 55.7%, 0%, 54.9%)
CIE-LAB	lab(22.95, 14.71, -39.90)
CIE-LCH	lch(22.95, 42.52, 290.23°)
OKLab	oklab(34.1% -0.0129 -0.1149)
OKLCH	oklch(34.1% 0.116 263.6)
XYZ	xyz(4.6306, 3.7871, 16.7033)
Luminance	0.0379 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173373 #735717

analogous

#176173 #173373 #291773

triadic

#173373 #731733 #337317

tetradic

#173373 #731761 #735717 #177329

square

#173373 #731761 #735717 #177329

split-complementary

#173373 #732917 #617317

monochromatic

#050B1A #0D1C40 #173373 #214AA6 #2F62D5

Accessibility & contrast

On white

11.95

#173373 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#173373 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173373

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173373	#FFFFFF	#000000	##FFFFFF
##173373	1.00	11.95	1.76	11.95
#FFFFFF	11.95	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#033B75

Deuteranopia (green-blind)

#003372

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173373;
/* rgb */ color: rgb(23, 51, 115);
/* oklch */ color: oklch(34.1% 0.116 263.6);

Tailwind

colors: {
  custom: {
    50: '#646a9c',
    500: '#173373',
    950: '#000000',
  },
}

SCSS

$custom: #173373;
$custom-light: #646a9c;
$custom-dark: #000000;

JSON

{
  "hex": "#173373",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 115
  },
  "hsl": {
    "h": 221.739,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.341,
    "c": 0.11567,
    "h": 263.6
  },
  "luminance": 0.03788
}

Semantic roles & 50–950 ramp

primary

#173373

secondary

#A9883D

accent

#B53EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173373

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

Preview Lab → · Contrast checker → · Palette generator →