#17178E#17178E

#17178E is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.184 H 269.7°. Best body text is #FFFFFF at 13.55:1 contrast (WCAG AA passes).

Color values

HEX	#17178E
RGB	rgb(23, 23, 142)
HSL	hsl(240, 72%, 32%)
HSV	hsv(240, 84%, 56%)
CMYK	cmyk(83.8%, 83.8%, 0%, 44.3%)
CIE-LAB	lab(19.00, 43.00, -63.45)
CIE-LCH	lch(19.00, 76.65, 304.12°)
OKLab	oklab(32.05% -0.0011 -0.1837)
OKLCH	oklch(32.05% 0.184 269.7)
XYZ	xyz(5.5406, 2.7473, 25.8242)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17178E #8E8E17

analogous

#17538E #17178E #53178E

triadic

#17178E #8E1717 #178E17

tetradic

#17178E #8E1753 #8E8E17 #178E53

square

#17178E #8E1753 #8E8E17 #178E53

split-complementary

#17178E #8E5317 #538E17

monochromatic

#060625 #0E0E59 #17178E #2020C3 #3F3FE0

Accessibility & contrast

On white

13.55

#17178E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#17178E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17178E

13.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17178E	#FFFFFF	#000000	##FFFFFF
##17178E	1.00	13.55	1.55	13.55
#FFFFFF	13.55	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003491

Deuteranopia (green-blind)

#00288C

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #17178e;
/* rgb */ color: rgb(23, 23, 142);
/* oklch */ color: oklch(32.0% 0.184 269.7);

Tailwind

colors: {
  custom: {
    50: '#6e58b0',
    500: '#17178e',
    950: '#000000',
  },
}

SCSS

$custom: #17178e;
$custom-light: #6e58b0;
$custom-dark: #000000;

JSON

{
  "hex": "#17178e",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 142
  },
  "hsl": {
    "h": 240,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.32047,
    "c": 0.18371,
    "h": 269.7
  },
  "luminance": 0.02748
}

Semantic roles & 50–950 ramp

primary

#17178E

secondary

#C0C040

accent

#EF39EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #17178E

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

Preview Lab → · Contrast checker → · Palette generator →