#171578#171578

#171578 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.1% C 0.158 H 271.6°. Best body text is #FFFFFF at 14.84:1 contrast (WCAG AA passes).

Color values

HEX	#171578
RGB	rgb(23, 21, 120)
HSL	hsl(241, 70%, 28%)
HSV	hsv(241, 83%, 47%)
CMYK	cmyk(80.8%, 82.5%, 0%, 52.9%)
CIE-LAB	lab(15.87, 36.69, -54.72)
CIE-LCH	lch(15.87, 65.89, 303.84°)
OKLab	oklab(29.07% 0.0043 -0.1584)
OKLCH	oklch(29.07% 0.158 271.6)
XYZ	xyz(4.0105, 2.0741, 17.9546)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171578 #767815

analogous

#154578 #171578 #481578

triadic

#171578 #781715 #157817

tetradic

#171578 #781545 #767815 #157848

square

#171578 #781545 #767815 #157848

split-complementary

#171578 #784815 #457815

monochromatic

#05051A #0D0C44 #171578 #211EAC #312DDA

Accessibility & contrast

On white

14.84

#171578 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#171578 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171578

14.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171578	#FFFFFF	#000000	##FFFFFF
##171578	1.00	14.84	1.42	14.84
#FFFFFF	14.84	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C7B

Deuteranopia (green-blind)

#002276

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #171578;
/* rgb */ color: rgb(23, 21, 120);
/* oklch */ color: oklch(29.1% 0.158 271.6);

Tailwind

colors: {
  custom: {
    50: '#6855a0',
    500: '#171578',
    950: '#000000',
  },
}

SCSS

$custom: #171578;
$custom-light: #6855a0;
$custom-dark: #000000;

JSON

{
  "hex": "#171578",
  "rgb": {
    "r": 23,
    "g": 21,
    "b": 120
  },
  "hsl": {
    "h": 241.212,
    "s": 70.213,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29068,
    "c": 0.15846,
    "h": 271.6
  },
  "luminance": 0.02075
}

Semantic roles & 50–950 ramp

primary

#171578

secondary

#ABAE3B

accent

#ED3BE9

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171578

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

Preview Lab → · Contrast checker → · Palette generator →