#17178A#17178A

#17178A is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.5% C 0.179 H 269.9°. Best body text is #FFFFFF at 13.76:1 contrast (WCAG AA passes).

Color values

HEX	#17178A
RGB	rgb(23, 23, 138)
HSL	hsl(240, 71%, 32%)
HSV	hsv(240, 83%, 54%)
CMYK	cmyk(83.3%, 83.3%, 0%, 45.9%)
CIE-LAB	lab(18.49, 41.69, -61.79)
CIE-LCH	lch(18.49, 74.54, 304.00°)
OKLab	oklab(31.55% -0.0002 -0.1789)
OKLCH	oklch(31.55% 0.179 269.9)
XYZ	xyz(5.2456, 2.6293, 24.2709)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17178A #8A8A17

analogous

#17518A #17178A #51178A

triadic

#17178A #8A1717 #178A17

tetradic

#17178A #8A1751 #8A8A17 #178A51

square

#17178A #8A1751 #8A8A17 #178A51

split-complementary

#17178A #8A5117 #518A17

monochromatic

#060621 #0E0E56 #17178A #2020BE #3D3DDF

Accessibility & contrast

On white

13.76

#17178A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#17178A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17178A

13.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17178A	#FFFFFF	#000000	##FFFFFF
##17178A	1.00	13.76	1.53	13.76
#FFFFFF	13.76	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338D

Deuteranopia (green-blind)

#002788

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #17178a;
/* rgb */ color: rgb(23, 23, 138);
/* oklch */ color: oklch(31.5% 0.179 269.9);

Tailwind

colors: {
  custom: {
    50: '#6d57ad',
    500: '#17178a',
    950: '#000000',
  },
}

SCSS

$custom: #17178a;
$custom-light: #6d57ad;
$custom-dark: #000000;

JSON

{
  "hex": "#17178a",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 138
  },
  "hsl": {
    "h": 240,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31548,
    "c": 0.17892,
    "h": 269.9
  },
  "luminance": 0.0263
}

Semantic roles & 50–950 ramp

primary

#17178A

secondary

#BEBE3F

accent

#EE3AEE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #17178A

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

Preview Lab → · Contrast checker → · Palette generator →