#17188A#17188A

#17188A is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.178 H 269.9°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#17188A
RGB	rgb(23, 24, 138)
HSL	hsl(239, 71%, 32%)
HSV	hsv(239, 83%, 54%)
CMYK	cmyk(83.3%, 82.6%, 0%, 45.9%)
CIE-LAB	lab(18.67, 41.17, -61.50)
CIE-LCH	lch(18.67, 74.01, 303.80°)
OKLab	oklab(31.67% -0.0005 -0.1781)
OKLCH	oklch(31.67% 0.178 269.9)
XYZ	xyz(5.2659, 2.6698, 24.2776)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17188A #8A8917

analogous

#17528A #17188A #50178A

triadic

#17188A #8A1718 #188A17

tetradic

#17188A #8A1752 #8A8917 #178A50

square

#17188A #8A1752 #8A8917 #178A50

split-complementary

#17188A #8A5017 #528A17

monochromatic

#060621 #0E0F56 #17188A #2021BE #3D3EDF

Accessibility & contrast

On white

13.69

#17188A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#17188A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17188A

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17188A	#FFFFFF	#000000	##FFFFFF
##17188A	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338D

Deuteranopia (green-blind)

#002788

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #17188a;
/* rgb */ color: rgb(23, 24, 138);
/* oklch */ color: oklch(31.7% 0.178 269.9);

Tailwind

colors: {
  custom: {
    50: '#6d58ad',
    500: '#17188a',
    950: '#000000',
  },
}

SCSS

$custom: #17188a;
$custom-light: #6d58ad;
$custom-dark: #000000;

JSON

{
  "hex": "#17188a",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 138
  },
  "hsl": {
    "h": 239.478,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31671,
    "c": 0.17809,
    "h": 269.9
  },
  "luminance": 0.0267
}

Semantic roles & 50–950 ramp

primary

#17188A

secondary

#BEBD3F

accent

#ED3AEE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #17188A

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

Preview Lab → · Contrast checker → · Palette generator →