#17188C#17188C

#17188C is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.181 H 269.7°. Best body text is #FFFFFF at 13.59:1 contrast (WCAG AA passes).

Color values

HEX	#17188C
RGB	rgb(23, 24, 140)
HSL	hsl(239, 72%, 32%)
HSV	hsv(239, 84%, 55%)
CMYK	cmyk(83.6%, 82.9%, 0%, 45.1%)
CIE-LAB	lab(18.92, 41.84, -62.34)
CIE-LCH	lch(18.92, 75.08, 303.87°)
OKLab	oklab(31.92% -0.0009 -0.1805)
OKLCH	oklch(31.92% 0.181 269.7)
XYZ	xyz(5.4120, 2.7282, 25.0472)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17188C #8C8B17

analogous

#17538C #17188C #51178C

triadic

#17188C #8C1718 #188C17

tetradic

#17188C #8C1753 #8C8B17 #178C51

square

#17188C #8C1753 #8C8B17 #178C51

split-complementary

#17188C #8C5117 #538C17

monochromatic

#060623 #0E0F57 #17188C #2021C1 #3E3FDF

Accessibility & contrast

On white

13.59

#17188C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#17188C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17188C

13.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17188C	#FFFFFF	#000000	##FFFFFF
##17188C	1.00	13.59	1.55	13.59
#FFFFFF	13.59	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348F

Deuteranopia (green-blind)

#00288A

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #17188c;
/* rgb */ color: rgb(23, 24, 140);
/* oklch */ color: oklch(31.9% 0.181 269.7);

Tailwind

colors: {
  custom: {
    50: '#6d58af',
    500: '#17188c',
    950: '#000000',
  },
}

SCSS

$custom: #17188c;
$custom-light: #6d58af;
$custom-dark: #000000;

JSON

{
  "hex": "#17188c",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 140
  },
  "hsl": {
    "h": 239.487,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.31918,
    "c": 0.18051,
    "h": 269.7
  },
  "luminance": 0.02729
}

Semantic roles & 50–950 ramp

primary

#17188C

secondary

#BFBE3F

accent

#ED39EF

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090311

muted

#7B7880

Preview Lab

Preview with #17188C

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

Preview Lab → · Contrast checker → · Palette generator →