#171C49#171C49

#171C49 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.083 H 274.0°. Best body text is #FFFFFF at 16.17:1 contrast (WCAG AA passes).

Color values

HEX	#171C49
RGB	rgb(23, 28, 73)
HSL	hsl(234, 52%, 19%)
HSV	hsv(234, 68%, 29%)
CMYK	cmyk(68.5%, 61.6%, 0%, 71.4%)
CIE-LAB	lab(12.57, 14.23, -28.86)
CIE-LCH	lch(12.57, 32.18, 296.25°)
OKLab	oklab(25.18% 0.0058 -0.0828)
OKLCH	oklch(25.18% 0.083 274)
XYZ	xyz(1.9708, 1.4935, 6.4865)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.33

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C49 #494417

analogous

#173549 #171C49 #2B1749

triadic

#171C49 #49171C #1C4917

tetradic

#171C49 #491735 #494417 #17492B

square

#171C49 #491735 #494417 #17492B

split-complementary

#171C49 #492B17 #354917

monochromatic

#070917 #080A1A #171C49 #262E78 #3440A6

Accessibility & contrast

On white

16.17

#171C49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#171C49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C49

16.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C49	#FFFFFF	#000000	##FFFFFF
##171C49	1.00	16.17	1.30	16.17
#FFFFFF	16.17	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234B

Deuteranopia (green-blind)

#001F48

Tritanopia (blue-blind)

#00272F

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #171c49;
/* rgb */ color: rgb(23, 28, 73);
/* oklch */ color: oklch(25.2% 0.083 274.0);

Tailwind

colors: {
  custom: {
    50: '#5a577c',
    500: '#171c49',
    950: '#000000',
  },
}

SCSS

$custom: #171c49;
$custom-light: #5a577c;
$custom-dark: #000000;

JSON

{
  "hex": "#171c49",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 73
  },
  "hsl": {
    "h": 234,
    "s": 52.083,
    "l": 18.824
  },
  "oklch": {
    "l": 0.25182,
    "c": 0.08306,
    "h": 274
  },
  "luminance": 0.01494
}

Semantic roles & 50–950 ramp

primary

#171C49

secondary

#80793C

accent

#CD4CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #171C49

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

Preview Lab → · Contrast checker → · Palette generator →