#171371#171371

#171371 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.9% C 0.151 H 272.5°. Best body text is #FFFFFF at 15.35:1 contrast (WCAG AA passes).

Color values

HEX	#171371
RGB	rgb(23, 19, 113)
HSL	hsl(243, 71%, 26%)
HSV	hsv(243, 83%, 44%)
CMYK	cmyk(79.6%, 83.2%, 0%, 55.7%)
CIE-LAB	lab(14.62, 35.39, -52.27)
CIE-LCH	lch(14.62, 63.12, 304.10°)
OKLab	oklab(27.94% 0.0067 -0.1513)
OKLCH	oklch(27.94% 0.151 272.5)
XYZ	xyz(3.5659, 1.8398, 15.7868)
Luminance	0.0184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171371 #6D7113

analogous

#133E71 #171371 #461371

triadic

#171371 #711713 #137117

tetradic

#171371 #71133E #6D7113 #137146

square

#171371 #71133E #6D7113 #137146

split-complementary

#171371 #714613 #3E7113

monochromatic

#05041A #0C0A3D #171371 #221CA5 #2C25DA

Accessibility & contrast

On white

15.35

#171371 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#171371 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171371

15.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171371	#FFFFFF	#000000	##FFFFFF
##171371	1.00	15.35	1.37	15.35
#FFFFFF	15.35	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002974

Deuteranopia (green-blind)

#00206F

Tritanopia (blue-blind)

#003042

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171371;
/* rgb */ color: rgb(23, 19, 113);
/* oklch */ color: oklch(27.9% 0.151 272.5);

Tailwind

colors: {
  custom: {
    50: '#66539b',
    500: '#171371',
    950: '#000000',
  },
}

SCSS

$custom: #171371;
$custom-light: #66539b;
$custom-dark: #000000;

JSON

{
  "hex": "#171371",
  "rgb": {
    "r": 23,
    "g": 19,
    "b": 113
  },
  "hsl": {
    "h": 242.553,
    "s": 71.212,
    "l": 25.882
  },
  "oklch": {
    "l": 0.27943,
    "c": 0.15141,
    "h": 272.5
  },
  "luminance": 0.0184
}

Semantic roles & 50–950 ramp

primary

#171371

secondary

#A3A838

accent

#EE3AE6

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #171371

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

Preview Lab → · Contrast checker → · Palette generator →