#172573#172573

#172573 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.1% C 0.134 H 268.9°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#172573
RGB	rgb(23, 37, 115)
HSL	hsl(231, 67%, 27%)
HSV	hsv(231, 80%, 45%)
CMYK	cmyk(80%, 67.8%, 0%, 54.9%)
CIE-LAB	lab(18.98, 24.69, -46.38)
CIE-LCH	lch(18.98, 52.54, 298.03°)
OKLab	oklab(31.13% -0.0026 -0.1342)
OKLCH	oklch(31.13% 0.134 268.9)
XYZ	xyz(4.1084, 2.7426, 16.5292)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172573 #736517

analogous

#175373 #172573 #371773

triadic

#172573 #731725 #257317

tetradic

#172573 #731753 #736517 #177337

square

#172573 #731753 #736517 #177337

split-complementary

#172573 #733717 #537317

monochromatic

#05081A #0D1540 #172573 #2135A6 #2F48D5

Accessibility & contrast

On white

13.56

#172573 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172573 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172573

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172573	#FFFFFF	#000000	##FFFFFF
##172573	1.00	13.56	1.55	13.56
#FFFFFF	13.56	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003375

Deuteranopia (green-blind)

#002A72

Tritanopia (blue-blind)

#003A48

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172573;
/* rgb */ color: rgb(23, 37, 115);
/* oklch */ color: oklch(31.1% 0.134 268.9);

Tailwind

colors: {
  custom: {
    50: '#655f9c',
    500: '#172573',
    950: '#000000',
  },
}

SCSS

$custom: #172573;
$custom-light: #655f9c;
$custom-dark: #000000;

JSON

{
  "hex": "#172573",
  "rgb": {
    "r": 23,
    "g": 37,
    "b": 115
  },
  "hsl": {
    "h": 230.87,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.31133,
    "c": 0.13419,
    "h": 268.9
  },
  "luminance": 0.02743
}

Semantic roles & 50–950 ramp

primary

#172573

secondary

#A9983D

accent

#D03EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #172573

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

Preview Lab → · Contrast checker → · Palette generator →