#172371#172371

#172371 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.5% C 0.134 H 269.5°. Best body text is #FFFFFF at 13.86:1 contrast (WCAG AA passes).

Color values

HEX	#172371
RGB	rgb(23, 35, 113)
HSL	hsl(232, 66%, 27%)
HSV	hsv(232, 80%, 44%)
CMYK	cmyk(79.6%, 69%, 0%, 55.7%)
CIE-LAB	lab(18.26, 25.29, -46.27)
CIE-LCH	lch(18.26, 52.73, 298.66°)
OKLab	oklab(30.54% -0.0012 -0.1339)
OKLCH	oklch(30.54% 0.134 269.5)
XYZ	xyz(3.9340, 2.5760, 15.9095)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172371 #716517

analogous

#175071 #172371 #381771

triadic

#172371 #711723 #237117

tetradic

#172371 #711750 #716517 #177138

square

#172371 #711750 #716517 #177138

split-complementary

#172371 #713817 #507117

monochromatic

#050819 #0D133E #172371 #2133A4 #2E44D4

Accessibility & contrast

On white

13.86

#172371 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#172371 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172371

13.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172371	#FFFFFF	#000000	##FFFFFF
##172371	1.00	13.86	1.52	13.86
#FFFFFF	13.86	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003173

Deuteranopia (green-blind)

#002870

Tritanopia (blue-blind)

#003846

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172371;
/* rgb */ color: rgb(23, 35, 113);
/* oklch */ color: oklch(30.5% 0.134 269.5);

Tailwind

colors: {
  custom: {
    50: '#645e9b',
    500: '#172371',
    950: '#000000',
  },
}

SCSS

$custom: #172371;
$custom-light: #645e9b;
$custom-dark: #000000;

JSON

{
  "hex": "#172371",
  "rgb": {
    "r": 23,
    "g": 35,
    "b": 113
  },
  "hsl": {
    "h": 232,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.30543,
    "c": 0.13389,
    "h": 269.5
  },
  "luminance": 0.02576
}

Semantic roles & 50–950 ramp

primary

#172371

secondary

#A7993D

accent

#D23FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #172371

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

Preview Lab → · Contrast checker → · Palette generator →