#171DA0#171DA0

#171DA0 is a dark, highly saturated blue. Relative luminance 0.036; OKLCH L 35.0% C 0.200 H 268.4°. Best body text is #FFFFFF at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#171DA0
RGB	rgb(23, 29, 160)
HSL	hsl(237, 75%, 36%)
HSV	hsv(237, 86%, 63%)
CMYK	cmyk(85.6%, 81.9%, 0%, 37.3%)
CIE-LAB	lab(22.30, 45.86, -69.08)
CIE-LCH	lch(22.30, 82.92, 303.58°)
OKLab	oklab(34.99% -0.0057 -0.2001)
OKLCH	oklch(34.99% 0.2 268.4)
XYZ	xyz(7.1357, 3.5981, 33.5693)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171DA0 #A09A17

analogous

#1761A0 #171DA0 #5517A0

triadic

#171DA0 #A0171D #1DA017

tetradic

#171DA0 #A01761 #A09A17 #17A055

square

#171DA0 #A01761 #A09A17 #17A055

split-complementary

#171DA0 #A05517 #61A017

monochromatic

#080A35 #0F136A #171DA0 #1F27D6 #4C53E5

Accessibility & contrast

On white

12.21

#171DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#171DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171DA0

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171DA0	#FFFFFF	#000000	##FFFFFF
##171DA0	1.00	12.21	1.72	12.21
#FFFFFF	12.21	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA4

Deuteranopia (green-blind)

#002E9E

Tritanopia (blue-blind)

#00475F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #171da0;
/* rgb */ color: rgb(23, 29, 160);
/* oklch */ color: oklch(35.0% 0.200 268.4);

Tailwind

colors: {
  custom: {
    50: '#725cbe',
    500: '#171da0',
    950: '#000000',
  },
}

SCSS

$custom: #171da0;
$custom-light: #725cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#171da0",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 160
  },
  "hsl": {
    "h": 237.372,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34987,
    "c": 0.20019,
    "h": 268.4
  },
  "luminance": 0.03599
}

Semantic roles & 50–950 ramp

primary

#171DA0

secondary

#C7C24C

accent

#E936F1

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #171DA0

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

Preview Lab → · Contrast checker → · Palette generator →