#171C6B#171C6B

#171C6B is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.6% C 0.134 H 271.6°. Best body text is #FFFFFF at 14.84:1 contrast (WCAG AA passes).

Color values

HEX	#171C6B
RGB	rgb(23, 28, 107)
HSL	hsl(236, 65%, 25%)
HSV	hsv(236, 79%, 42%)
CMYK	cmyk(78.5%, 73.8%, 0%, 58%)
CIE-LAB	lab(15.87, 27.72, -46.30)
CIE-LCH	lch(15.87, 53.97, 300.91°)
OKLab	oklab(28.62% 0.0037 -0.134)
OKLCH	oklch(28.62% 0.134 271.6)
XYZ	xyz(3.4215, 2.0738, 14.1270)
Luminance	0.0207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C6B #6B6617

analogous

#17466B #171C6B #3C176B

triadic

#171C6B #6B171C #1C6B17

tetradic

#171C6B #6B1746 #6B6617 #176B3C

square

#171C6B #6B1746 #6B6617 #176B3C

split-complementary

#171C6B #6B3C17 #466B17

monochromatic

#050719 #0C0F39 #171C6B #22299D #2D36D0

Accessibility & contrast

On white

14.84

#171C6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#171C6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C6B

14.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C6B	#FFFFFF	#000000	##FFFFFF
##171C6B	1.00	14.84	1.41	14.84
#FFFFFF	14.84	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6D

Deuteranopia (green-blind)

#00236A

Tritanopia (blue-blind)

#003241

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #171c6b;
/* rgb */ color: rgb(23, 28, 107);
/* oklch */ color: oklch(28.6% 0.134 271.6);

Tailwind

colors: {
  custom: {
    50: '#635896',
    500: '#171c6b',
    950: '#000000',
  },
}

SCSS

$custom: #171c6b;
$custom-light: #635896;
$custom-dark: #000000;

JSON

{
  "hex": "#171c6b",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 107
  },
  "hsl": {
    "h": 236.429,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28621,
    "c": 0.13403,
    "h": 271.6
  },
  "luminance": 0.02074
}

Semantic roles & 50–950 ramp

primary

#171C6B

secondary

#A19B3D

accent

#DE40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171C6B

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

Preview Lab → · Contrast checker → · Palette generator →