#171381#171381

#171381 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.9% C 0.171 H 270.9°. Best body text is #FFFFFF at 14.52:1 contrast (WCAG AA passes).

Color values

HEX	#171381
RGB	rgb(23, 19, 129)
HSL	hsl(242, 74%, 29%)
HSV	hsv(242, 85%, 51%)
CMYK	cmyk(82.2%, 85.3%, 0%, 49.4%)
CIE-LAB	lab(16.66, 40.73, -59.16)
CIE-LCH	lch(16.66, 71.82, 304.55°)
OKLab	oklab(29.95% 0.0027 -0.1712)
OKLCH	oklch(29.95% 0.171 270.9)
XYZ	xyz(4.5473, 2.2324, 20.9558)
Luminance	0.0223 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171381 #7D8113

analogous

#134681 #171381 #4E1381

triadic

#171381 #811713 #138117

tetradic

#171381 #811346 #7D8113 #13814E

square

#171381 #811346 #7D8113 #13814E

split-complementary

#171381 #814E13 #468113

monochromatic

#05041B #0D0B4C #171381 #211BB6 #352EE0

Accessibility & contrast

On white

14.52

#171381 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#171381 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171381

14.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171381	#FFFFFF	#000000	##FFFFFF
##171381	1.00	14.52	1.45	14.52
#FFFFFF	14.52	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F84

Deuteranopia (green-blind)

#00237F

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171381;
/* rgb */ color: rgb(23, 19, 129);
/* oklch */ color: oklch(29.9% 0.171 270.9);

Tailwind

colors: {
  custom: {
    50: '#6b54a7',
    500: '#171381',
    950: '#000000',
  },
}

SCSS

$custom: #171381;
$custom-light: #6b54a7;
$custom-dark: #000000;

JSON

{
  "hex": "#171381",
  "rgb": {
    "r": 23,
    "g": 19,
    "b": 129
  },
  "hsl": {
    "h": 242.182,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.29947,
    "c": 0.17123,
    "h": 270.9
  },
  "luminance": 0.02233
}

Semantic roles & 50–950 ramp

primary

#171381

secondary

#B2B63A

accent

#F137EA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #171381

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

Preview Lab → · Contrast checker → · Palette generator →