#171F89#171F89

#171F89 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.5% C 0.170 H 269.2°. Best body text is #FFFFFF at 13.18:1 contrast (WCAG AA passes).

Color values

HEX	#171F89
RGB	rgb(23, 31, 137)
HSL	hsl(236, 71%, 31%)
HSV	hsv(236, 83%, 54%)
CMYK	cmyk(83.2%, 77.4%, 0%, 46.3%)
CIE-LAB	lab(19.91, 36.90, -58.81)
CIE-LCH	lch(19.91, 69.43, 302.11°)
OKLab	oklab(32.51% -0.0022 -0.1704)
OKLCH	oklch(32.51% 0.17 269.2)
XYZ	xyz(5.3571, 2.9676, 23.9525)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F89 #898117

analogous

#175889 #171F89 #481789

triadic

#171F89 #89171F #1F8917

tetradic

#171F89 #891758 #898117 #178948

square

#171F89 #891758 #898117 #178948

split-complementary

#171F89 #894817 #588917

monochromatic

#050720 #0E1355 #171F89 #202BBD #3C48DE

Accessibility & contrast

On white

13.18

#171F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#171F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F89

13.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F89	#FFFFFF	#000000	##FFFFFF
##171F89	1.00	13.18	1.59	13.18
#FFFFFF	13.18	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368C

Deuteranopia (green-blind)

#002A87

Tritanopia (blue-blind)

#003F53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #171f89;
/* rgb */ color: rgb(23, 31, 137);
/* oklch */ color: oklch(32.5% 0.170 269.2);

Tailwind

colors: {
  custom: {
    50: '#6c5cad',
    500: '#171f89',
    950: '#000000',
  },
}

SCSS

$custom: #171f89;
$custom-light: #6c5cad;
$custom-dark: #000000;

JSON

{
  "hex": "#171f89",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 137
  },
  "hsl": {
    "h": 235.789,
    "s": 71.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.32511,
    "c": 0.17041,
    "h": 269.2
  },
  "luminance": 0.02968
}

Semantic roles & 50–950 ramp

primary

#171F89

secondary

#BDB43F

accent

#E13AEE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #171F89

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

Preview Lab → · Contrast checker → · Palette generator →