#171553#171553

#171553 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.7% C 0.109 H 276.4°. Best body text is #FFFFFF at 16.55:1 contrast (WCAG AA passes).

Color values

HEX	#171553
RGB	rgb(23, 21, 83)
HSL	hsl(242, 60%, 20%)
HSV	hsv(242, 75%, 33%)
CMYK	cmyk(72.3%, 74.7%, 0%, 67.5%)
CIE-LAB	lab(11.57, 23.27, -37.35)
CIE-LCH	lch(11.57, 44.01, 301.92°)
OKLab	oklab(24.75% 0.012 -0.1078)
OKLCH	oklch(24.75% 0.109 276.4)
XYZ	xyz(2.1823, 1.3428, 8.3261)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171553 #515315

analogous

#153253 #171553 #361553

triadic

#171553 #531715 #155317

tetradic

#171553 #531532 #515315 #155336

square

#171553 #531532 #515315 #155336

split-complementary

#171553 #533615 #325315

monochromatic

#070618 #090922 #171553 #252184 #322EB5

Accessibility & contrast

On white

16.55

#171553 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#171553 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171553

16.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171553	#FFFFFF	#000000	##FFFFFF
##171553	1.00	16.55	1.27	16.55
#FFFFFF	16.55	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002155

Deuteranopia (green-blind)

#001C52

Tritanopia (blue-blind)

#002632

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #171553;
/* rgb */ color: rgb(23, 21, 83);
/* oklch */ color: oklch(24.7% 0.109 276.4);

Tailwind

colors: {
  custom: {
    50: '#5e5384',
    500: '#171553',
    950: '#000000',
  },
}

SCSS

$custom: #171553;
$custom-light: #5e5384;
$custom-dark: #000000;

JSON

{
  "hex": "#171553",
  "rgb": {
    "r": 23,
    "g": 21,
    "b": 83
  },
  "hsl": {
    "h": 241.935,
    "s": 59.615,
    "l": 20.392
  },
  "oklch": {
    "l": 0.24747,
    "c": 0.10851,
    "h": 276.4
  },
  "luminance": 0.01343
}

Semantic roles & 50–950 ramp

primary

#171553

secondary

#888B39

accent

#E345DE

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #171553

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

Preview Lab → · Contrast checker → · Palette generator →