#171589#171589

#171589 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.2% C 0.179 H 270.1°. Best body text is #FFFFFF at 13.95:1 contrast (WCAG AA passes).

Color values

HEX	#171589
RGB	rgb(23, 21, 137)
HSL	hsl(241, 73%, 31%)
HSV	hsv(241, 85%, 54%)
CMYK	cmyk(83.2%, 84.7%, 0%, 46.3%)
CIE-LAB	lab(18.03, 42.35, -61.94)
CIE-LCH	lch(18.03, 75.04, 304.36°)
OKLab	oklab(31.19% 0.0004 -0.1793)
OKLCH	oklch(31.19% 0.179 270.1)
XYZ	xyz(5.1353, 2.5240, 23.8786)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171589 #878915

analogous

#154D89 #171589 #511589

triadic

#171589 #891715 #158917

tetradic

#171589 #89154D #878915 #158951

square

#171589 #89154D #878915 #158951

split-complementary

#171589 #895115 #4D8915

monochromatic

#05051F #0E0D54 #171589 #201DBE #3B38E0

Accessibility & contrast

On white

13.95

#171589 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#171589 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171589

13.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171589	#FFFFFF	#000000	##FFFFFF
##171589	1.00	13.95	1.51	13.95
#FFFFFF	13.95	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328C

Deuteranopia (green-blind)

#002687

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #171589;
/* rgb */ color: rgb(23, 21, 137);
/* oklch */ color: oklch(31.2% 0.179 270.1);

Tailwind

colors: {
  custom: {
    50: '#6d56ad',
    500: '#171589',
    950: '#000000',
  },
}

SCSS

$custom: #171589;
$custom-light: #6d56ad;
$custom-dark: #000000;

JSON

{
  "hex": "#171589",
  "rgb": {
    "r": 23,
    "g": 21,
    "b": 137
  },
  "hsl": {
    "h": 241.034,
    "s": 73.418,
    "l": 30.98
  },
  "oklch": {
    "l": 0.31188,
    "c": 0.1793,
    "h": 270.1
  },
  "luminance": 0.02525
}

Semantic roles & 50–950 ramp

primary

#171589

secondary

#BBBD3D

accent

#F038ED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #171589

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

Preview Lab → · Contrast checker → · Palette generator →