#171580#171580

#171580 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.168 H 270.8°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#171580
RGB	rgb(23, 21, 128)
HSL	hsl(241, 72%, 29%)
HSV	hsv(241, 84%, 50%)
CMYK	cmyk(82%, 83.6%, 0%, 49.8%)
CIE-LAB	lab(16.88, 39.40, -58.17)
CIE-LCH	lch(16.88, 70.25, 304.11°)
OKLab	oklab(30.06% 0.0025 -0.1684)
OKLCH	oklch(30.06% 0.168 270.8)
XYZ	xyz(4.5165, 2.2765, 20.6193)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171580 #7E8015

analogous

#154980 #171580 #4C1580

triadic

#171580 #801715 #158017

tetradic

#171580 #801549 #7E8015 #15804C

square

#171580 #801549 #7E8015 #15804C

split-complementary

#171580 #804C15 #498015

monochromatic

#05041A #0E0C4B #171580 #201EB5 #3532DD

Accessibility & contrast

On white

14.43

#171580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#171580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171580

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171580	#FFFFFF	#000000	##FFFFFF
##171580	1.00	14.43	1.46	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F83

Deuteranopia (green-blind)

#00247E

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171580;
/* rgb */ color: rgb(23, 21, 128);
/* oklch */ color: oklch(30.1% 0.168 270.8);

Tailwind

colors: {
  custom: {
    50: '#6a55a6',
    500: '#171580',
    950: '#000000',
  },
}

SCSS

$custom: #171580;
$custom-light: #6a55a6;
$custom-dark: #000000;

JSON

{
  "hex": "#171580",
  "rgb": {
    "r": 23,
    "g": 21,
    "b": 128
  },
  "hsl": {
    "h": 241.121,
    "s": 71.812,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30059,
    "c": 0.1684,
    "h": 270.8
  },
  "luminance": 0.02277
}

Semantic roles & 50–950 ramp

primary

#171580

secondary

#B3B53C

accent

#EF39EB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #171580

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

Preview Lab → · Contrast checker → · Palette generator →