#171988#171988

#171988 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.175 H 269.9°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#171988
RGB	rgb(23, 25, 136)
HSL	hsl(239, 71%, 31%)
HSV	hsv(239, 83%, 53%)
CMYK	cmyk(83.1%, 81.6%, 0%, 46.7%)
CIE-LAB	lab(18.60, 39.97, -60.36)
CIE-LCH	lch(18.60, 72.39, 303.51°)
OKLab	oklab(31.55% -0.0003 -0.1748)
OKLCH	oklch(31.55% 0.175 269.9)
XYZ	xyz(5.1434, 2.6544, 23.5290)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171988 #888617

analogous

#175188 #171988 #4D1788

triadic

#171988 #881719 #198817

tetradic

#171988 #881751 #888617 #17884D

square

#171988 #881751 #888617 #17884D

split-complementary

#171988 #884D17 #518817

monochromatic

#05061F #0E0F54 #171988 #2023BC #3B3EDE

Accessibility & contrast

On white

13.72

#171988 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#171988 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171988

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171988	#FFFFFF	#000000	##FFFFFF
##171988	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002786

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #171988;
/* rgb */ color: rgb(23, 25, 136);
/* oklch */ color: oklch(31.6% 0.175 269.9);

Tailwind

colors: {
  custom: {
    50: '#6c58ac',
    500: '#171988',
    950: '#000000',
  },
}

SCSS

$custom: #171988;
$custom-light: #6c58ac;
$custom-dark: #000000;

JSON

{
  "hex": "#171988",
  "rgb": {
    "r": 23,
    "g": 25,
    "b": 136
  },
  "hsl": {
    "h": 238.938,
    "s": 71.069,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31552,
    "c": 0.17479,
    "h": 269.9
  },
  "luminance": 0.02655
}

Semantic roles & 50–950 ramp

primary

#171988

secondary

#BCBA3F

accent

#EB3AEE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #171988

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

Preview Lab → · Contrast checker → · Palette generator →