#17188F#17188F

#17188F is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.3% C 0.184 H 269.5°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#17188F
RGB	rgb(23, 24, 143)
HSL	hsl(240, 72%, 33%)
HSV	hsv(240, 84%, 56%)
CMYK	cmyk(83.9%, 83.2%, 0%, 43.9%)
CIE-LAB	lab(19.30, 42.83, -63.58)
CIE-LCH	lch(19.30, 76.66, 303.96°)
OKLab	oklab(32.29% -0.0015 -0.1841)
OKLCH	oklch(32.29% 0.184 269.5)
XYZ	xyz(5.6362, 2.8179, 26.2281)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17188F #8F8E17

analogous

#17548F #17188F #52178F

triadic

#17188F #8F1718 #188F17

tetradic

#17188F #8F1754 #8F8E17 #178F52

square

#17188F #8F1754 #8F8E17 #178F52

split-complementary

#17188F #8F5217 #548F17

monochromatic

#060626 #0F0F5A #17188F #1F21C4 #4041E0

Accessibility & contrast

On white

13.43

#17188F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#17188F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17188F

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17188F	#FFFFFF	#000000	##FFFFFF
##17188F	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003592

Deuteranopia (green-blind)

#00288D

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #17188f;
/* rgb */ color: rgb(23, 24, 143);
/* oklch */ color: oklch(32.3% 0.184 269.5);

Tailwind

colors: {
  custom: {
    50: '#6e58b1',
    500: '#17188f',
    950: '#000000',
  },
}

SCSS

$custom: #17188f;
$custom-light: #6e58b1;
$custom-dark: #000000;

JSON

{
  "hex": "#17188f",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 143
  },
  "hsl": {
    "h": 239.5,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3229,
    "c": 0.18411,
    "h": 269.5
  },
  "luminance": 0.02819
}

Semantic roles & 50–950 ramp

primary

#17188F

secondary

#C1C041

accent

#ED39EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #17188F

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

Preview Lab → · Contrast checker → · Palette generator →