#171C6D#171C6D

#171C6D is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.8% C 0.137 H 271.4°. Best body text is #FFFFFF at 14.75:1 contrast (WCAG AA passes).

Color values

HEX	#171C6D
RGB	rgb(23, 28, 109)
HSL	hsl(237, 65%, 26%)
HSV	hsv(237, 79%, 43%)
CMYK	cmyk(78.9%, 74.3%, 0%, 57.3%)
CIE-LAB	lab(16.09, 28.48, -47.25)
CIE-LCH	lch(16.09, 55.17, 301.08°)
OKLab	oklab(28.84% 0.0034 -0.1367)
OKLCH	oklch(28.84% 0.137 271.4)
XYZ	xyz(3.5280, 2.1164, 14.6876)
Luminance	0.0212 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C6D #6D6817

analogous

#17476D #171C6D #3D176D

triadic

#171C6D #6D171C #1C6D17

tetradic

#171C6D #6D1747 #6D6817 #176D3D

square

#171C6D #6D1747 #6D6817 #176D3D

split-complementary

#171C6D #6D3D17 #476D17

monochromatic

#050619 #0C0F3A #171C6D #2229A0 #2C36D2

Accessibility & contrast

On white

14.75

#171C6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#171C6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C6D

14.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C6D	#FFFFFF	#000000	##FFFFFF
##171C6D	1.00	14.75	1.42	14.75
#FFFFFF	14.75	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6F

Deuteranopia (green-blind)

#00246C

Tritanopia (blue-blind)

#003342

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171c6d;
/* rgb */ color: rgb(23, 28, 109);
/* oklch */ color: oklch(28.8% 0.137 271.4);

Tailwind

colors: {
  custom: {
    50: '#645898',
    500: '#171c6d',
    950: '#000000',
  },
}

SCSS

$custom: #171c6d;
$custom-light: #645898;
$custom-dark: #000000;

JSON

{
  "hex": "#171c6d",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 109
  },
  "hsl": {
    "h": 236.512,
    "s": 65.152,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28842,
    "c": 0.13679,
    "h": 271.4
  },
  "luminance": 0.02117
}

Semantic roles & 50–950 ramp

primary

#171C6D

secondary

#A39D3D

accent

#DE40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #171C6D

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

Preview Lab → · Contrast checker → · Palette generator →