#171C6A#171C6A

#171C6A is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.5% C 0.133 H 271.6°. Best body text is #FFFFFF at 14.89:1 contrast (WCAG AA passes).

Color values

HEX	#171C6A
RGB	rgb(23, 28, 106)
HSL	hsl(236, 64%, 25%)
HSV	hsv(236, 78%, 42%)
CMYK	cmyk(78.3%, 73.6%, 0%, 58.4%)
CIE-LAB	lab(15.76, 27.34, -45.82)
CIE-LCH	lch(15.76, 53.36, 300.82°)
OKLab	oklab(28.51% 0.0038 -0.1326)
OKLCH	oklch(28.51% 0.133 271.6)
XYZ	xyz(3.3692, 2.0529, 13.8516)
Luminance	0.0205 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C6A #6A6517

analogous

#17456A #171C6A #3C176A

triadic

#171C6A #6A171C #1C6A17

tetradic

#171C6A #6A1745 #6A6517 #176A3C

square

#171C6A #6A1745 #6A6517 #176A3C

split-complementary

#171C6A #6A3C17 #456A17

monochromatic

#050719 #0C0F38 #171C6A #22299C #2D37CF

Accessibility & contrast

On white

14.89

#171C6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#171C6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C6A

14.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C6A	#FFFFFF	#000000	##FFFFFF
##171C6A	1.00	14.89	1.41	14.89
#FFFFFF	14.89	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B6C

Deuteranopia (green-blind)

#002369

Tritanopia (blue-blind)

#003240

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #171c6a;
/* rgb */ color: rgb(23, 28, 106);
/* oklch */ color: oklch(28.5% 0.133 271.6);

Tailwind

colors: {
  custom: {
    50: '#635896',
    500: '#171c6a',
    950: '#000000',
  },
}

SCSS

$custom: #171c6a;
$custom-light: #635896;
$custom-dark: #000000;

JSON

{
  "hex": "#171c6a",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 106
  },
  "hsl": {
    "h": 236.386,
    "s": 64.341,
    "l": 25.294
  },
  "oklch": {
    "l": 0.28511,
    "c": 0.13264,
    "h": 271.6
  },
  "luminance": 0.02053
}

Semantic roles & 50–950 ramp

primary

#171C6A

secondary

#A09A3D

accent

#DD40E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171C6A

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

Preview Lab → · Contrast checker → · Palette generator →