#171CA0#171CA0

#171CA0 is a dark, highly saturated blue. Relative luminance 0.036; OKLCH L 34.9% C 0.201 H 268.4°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#171CA0
RGB	rgb(23, 28, 160)
HSL	hsl(238, 75%, 36%)
HSV	hsv(238, 86%, 63%)
CMYK	cmyk(85.6%, 82.5%, 0%, 37.3%)
CIE-LAB	lab(22.12, 46.36, -69.37)
CIE-LCH	lch(22.12, 83.44, 303.76°)
OKLab	oklab(34.87% -0.0056 -0.2009)
OKLCH	oklch(34.87% 0.201 268.4)
XYZ	xyz(7.1116, 3.5499, 33.5613)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171CA0 #A09B17

analogous

#1760A0 #171CA0 #5617A0

triadic

#171CA0 #A0171C #1CA017

tetradic

#171CA0 #A01760 #A09B17 #17A056

square

#171CA0 #A01760 #A09B17 #17A056

split-complementary

#171CA0 #A05617 #60A017

monochromatic

#080935 #0F136A #171CA0 #1F25D6 #4C52E5

Accessibility & contrast

On white

12.28

#171CA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#171CA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171CA0

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171CA0	#FFFFFF	#000000	##FFFFFF
##171CA0	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA4

Deuteranopia (green-blind)

#002E9E

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #171ca0;
/* rgb */ color: rgb(23, 28, 160);
/* oklch */ color: oklch(34.9% 0.201 268.4);

Tailwind

colors: {
  custom: {
    50: '#725cbe',
    500: '#171ca0',
    950: '#000000',
  },
}

SCSS

$custom: #171ca0;
$custom-light: #725cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#171ca0",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 160
  },
  "hsl": {
    "h": 237.81,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34867,
    "c": 0.201,
    "h": 268.4
  },
  "luminance": 0.03551
}

Semantic roles & 50–950 ramp

primary

#171CA0

secondary

#C7C34C

accent

#EB36F1

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #171CA0

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

Preview Lab → · Contrast checker → · Palette generator →