#17178D#17178D

#17178D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.183 H 269.7°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#17178D
RGB	rgb(23, 23, 141)
HSL	hsl(240, 72%, 32%)
HSV	hsv(240, 84%, 55%)
CMYK	cmyk(83.7%, 83.7%, 0%, 44.7%)
CIE-LAB	lab(18.87, 42.67, -63.04)
CIE-LCH	lch(18.87, 76.12, 304.09°)
OKLab	oklab(31.92% -0.0009 -0.1825)
OKLCH	oklch(31.92% 0.183 269.7)
XYZ	xyz(5.4658, 2.7174, 25.4306)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17178D #8D8D17

analogous

#17528D #17178D #52178D

triadic

#17178D #8D1717 #178D17

tetradic

#17178D #8D1752 #8D8D17 #178D52

square

#17178D #8D1752 #8D8D17 #178D52

split-complementary

#17178D #8D5217 #528D17

monochromatic

#060624 #0E0E58 #17178D #2020C2 #3F3FE0

Accessibility & contrast

On white

13.60

#17178D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#17178D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17178D

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17178D	#FFFFFF	#000000	##FFFFFF
##17178D	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003490

Deuteranopia (green-blind)

#00288B

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #17178d;
/* rgb */ color: rgb(23, 23, 141);
/* oklch */ color: oklch(31.9% 0.183 269.7);

Tailwind

colors: {
  custom: {
    50: '#6d57b0',
    500: '#17178d',
    950: '#000000',
  },
}

SCSS

$custom: #17178d;
$custom-light: #6d57b0;
$custom-dark: #000000;

JSON

{
  "hex": "#17178d",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 141
  },
  "hsl": {
    "h": 240,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.31922,
    "c": 0.18252,
    "h": 269.7
  },
  "luminance": 0.02718
}

Semantic roles & 50–950 ramp

primary

#17178D

secondary

#C0C040

accent

#EF39EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #17178D

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

Preview Lab → · Contrast checker → · Palette generator →