#171C6C#171C6C

#171C6C is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.7% C 0.135 H 271.5°. Best body text is #FFFFFF at 14.80:1 contrast (WCAG AA passes).

Color values

HEX	#171C6C
RGB	rgb(23, 28, 108)
HSL	hsl(236, 65%, 26%)
HSV	hsv(236, 79%, 42%)
CMYK	cmyk(78.7%, 74.1%, 0%, 57.6%)
CIE-LAB	lab(15.98, 28.10, -46.78)
CIE-LCH	lch(15.98, 54.57, 301.00°)
OKLab	oklab(28.73% 0.0035 -0.1354)
OKLCH	oklch(28.73% 0.135 271.5)
XYZ	xyz(3.4745, 2.0950, 14.4057)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C6C #6C6717

analogous

#17466C #171C6C #3C176C

triadic

#171C6C #6C171C #1C6C17

tetradic

#171C6C #6C1746 #6C6717 #176C3C

square

#171C6C #6C1746 #6C6717 #176C3C

split-complementary

#171C6C #6C3C17 #466C17

monochromatic

#050719 #0C0F3A #171C6C #22299E #2C36D1

Accessibility & contrast

On white

14.80

#171C6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#171C6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C6C

14.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C6C	#FFFFFF	#000000	##FFFFFF
##171C6C	1.00	14.80	1.42	14.80
#FFFFFF	14.80	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6E

Deuteranopia (green-blind)

#00246B

Tritanopia (blue-blind)

#003241

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171c6c;
/* rgb */ color: rgb(23, 28, 108);
/* oklch */ color: oklch(28.7% 0.135 271.5);

Tailwind

colors: {
  custom: {
    50: '#645897',
    500: '#171c6c',
    950: '#000000',
  },
}

SCSS

$custom: #171c6c;
$custom-light: #645897;
$custom-dark: #000000;

JSON

{
  "hex": "#171c6c",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 108
  },
  "hsl": {
    "h": 236.471,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28731,
    "c": 0.13542,
    "h": 271.5
  },
  "luminance": 0.02095
}

Semantic roles & 50–950 ramp

primary

#171C6C

secondary

#A29C3D

accent

#DE40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #171C6C

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

Preview Lab → · Contrast checker → · Palette generator →