#171573#171573

#171573 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.5% C 0.152 H 272.1°. Best body text is #FFFFFF at 15.09:1 contrast (WCAG AA passes).

Color values

HEX	#171573
RGB	rgb(23, 21, 115)
HSL	hsl(241, 69%, 27%)
HSV	hsv(241, 82%, 45%)
CMYK	cmyk(80%, 81.7%, 0%, 54.9%)
CIE-LAB	lab(15.25, 34.97, -52.52)
CIE-LCH	lch(15.25, 63.10, 303.66°)
OKLab	oklab(28.46% 0.0055 -0.152)
OKLCH	oklch(28.46% 0.152 272.1)
XYZ	xyz(3.7150, 1.9559, 16.3981)
Luminance	0.0196 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171573 #717315

analogous

#154273 #171573 #461573

triadic

#171573 #731715 #157317

tetradic

#171573 #731542 #717315 #157346

square

#171573 #731542 #717315 #157346

split-complementary

#171573 #734615 #427315

monochromatic

#05051A #0D0C3F #171573 #211EA7 #2E2AD8

Accessibility & contrast

On white

15.09

#171573 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#171573 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171573

15.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171573	#FFFFFF	#000000	##FFFFFF
##171573	1.00	15.09	1.39	15.09
#FFFFFF	15.09	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B76

Deuteranopia (green-blind)

#002171

Tritanopia (blue-blind)

#003244

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #171573;
/* rgb */ color: rgb(23, 21, 115);
/* oklch */ color: oklch(28.5% 0.152 272.1);

Tailwind

colors: {
  custom: {
    50: '#66549c',
    500: '#171573',
    950: '#000000',
  },
}

SCSS

$custom: #171573;
$custom-light: #66549c;
$custom-dark: #000000;

JSON

{
  "hex": "#171573",
  "rgb": {
    "r": 23,
    "g": 21,
    "b": 115
  },
  "hsl": {
    "h": 241.277,
    "s": 69.118,
    "l": 26.667
  },
  "oklch": {
    "l": 0.28456,
    "c": 0.15212,
    "h": 272.1
  },
  "luminance": 0.01956
}

Semantic roles & 50–950 ramp

primary

#171573

secondary

#A7A93B

accent

#EC3CE8

background

#F6F5F9

surface

#EBE8F2

border

#C6C4CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171573

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

Preview Lab → · Contrast checker → · Palette generator →