#17178C#17178C

#17178C is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.181 H 269.8°. Best body text is #FFFFFF at 13.66:1 contrast (WCAG AA passes).

Color values

HEX	#17178C
RGB	rgb(23, 23, 140)
HSL	hsl(240, 72%, 32%)
HSV	hsv(240, 84%, 55%)
CMYK	cmyk(83.6%, 83.6%, 0%, 45.1%)
CIE-LAB	lab(18.75, 42.34, -62.62)
CIE-LCH	lch(18.75, 75.60, 304.06°)
OKLab	oklab(31.8% -0.0007 -0.1813)
OKLCH	oklch(31.8% 0.181 269.8)
XYZ	xyz(5.3918, 2.6878, 25.0405)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17178C #8C8C17

analogous

#17528C #17178C #52178C

triadic

#17178C #8C1717 #178C17

tetradic

#17178C #8C1752 #8C8C17 #178C52

square

#17178C #8C1752 #8C8C17 #178C52

split-complementary

#17178C #8C5217 #528C17

monochromatic

#060623 #0E0E57 #17178C #2020C1 #3E3EDF

Accessibility & contrast

On white

13.66

#17178C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#17178C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17178C

13.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17178C	#FFFFFF	#000000	##FFFFFF
##17178C	1.00	13.66	1.54	13.66
#FFFFFF	13.66	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348F

Deuteranopia (green-blind)

#00278A

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #17178c;
/* rgb */ color: rgb(23, 23, 140);
/* oklch */ color: oklch(31.8% 0.181 269.8);

Tailwind

colors: {
  custom: {
    50: '#6d57af',
    500: '#17178c',
    950: '#000000',
  },
}

SCSS

$custom: #17178c;
$custom-light: #6d57af;
$custom-dark: #000000;

JSON

{
  "hex": "#17178c",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 140
  },
  "hsl": {
    "h": 240,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.31797,
    "c": 0.18132,
    "h": 269.8
  },
  "luminance": 0.02688
}

Semantic roles & 50–950 ramp

primary

#17178C

secondary

#BFBF3F

accent

#EF39EF

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090311

muted

#7B7880

Preview Lab

Preview with #17178C

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

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