#17178F#17178F

#17178F is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.185 H 269.6°. Best body text is #FFFFFF at 13.50:1 contrast (WCAG AA passes).

Color values

HEX	#17178F
RGB	rgb(23, 23, 143)
HSL	hsl(240, 72%, 33%)
HSV	hsv(240, 84%, 56%)
CMYK	cmyk(83.9%, 83.9%, 0%, 43.9%)
CIE-LAB	lab(19.13, 43.32, -63.86)
CIE-LCH	lch(19.13, 77.17, 304.15°)
OKLab	oklab(32.17% -0.0013 -0.1849)
OKLCH	oklch(32.17% 0.185 269.6)
XYZ	xyz(5.6160, 2.7775, 26.2214)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17178F #8F8F17

analogous

#17538F #17178F #53178F

triadic

#17178F #8F1717 #178F17

tetradic

#17178F #8F1753 #8F8F17 #178F53

square

#17178F #8F1753 #8F8F17 #178F53

split-complementary

#17178F #8F5317 #538F17

monochromatic

#060626 #0F0F5A #17178F #1F1FC4 #4040E0

Accessibility & contrast

On white

13.50

#17178F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#17178F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17178F

13.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17178F	#FFFFFF	#000000	##FFFFFF
##17178F	1.00	13.50	1.56	13.50
#FFFFFF	13.50	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003592

Deuteranopia (green-blind)

#00288D

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #17178f;
/* rgb */ color: rgb(23, 23, 143);
/* oklch */ color: oklch(32.2% 0.185 269.6);

Tailwind

colors: {
  custom: {
    50: '#6e58b1',
    500: '#17178f',
    950: '#000000',
  },
}

SCSS

$custom: #17178f;
$custom-light: #6e58b1;
$custom-dark: #000000;

JSON

{
  "hex": "#17178f",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 143
  },
  "hsl": {
    "h": 240,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32172,
    "c": 0.1849,
    "h": 269.6
  },
  "luminance": 0.02778
}

Semantic roles & 50–950 ramp

primary

#17178F

secondary

#C1C141

accent

#EF39EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #17178F

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

Preview Lab → · Contrast checker → · Palette generator →