#171D69#171D69

#171D69 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.6% C 0.130 H 271.5°. Best body text is #FFFFFF at 14.83:1 contrast (WCAG AA passes).

Color values

HEX	#171D69
RGB	rgb(23, 29, 105)
HSL	hsl(236, 64%, 25%)
HSV	hsv(236, 78%, 41%)
CMYK	cmyk(78.1%, 72.4%, 0%, 58.8%)
CIE-LAB	lab(15.90, 26.28, -44.94)
CIE-LCH	lch(15.90, 52.06, 300.32°)
OKLab	oklab(28.58% 0.0033 -0.13)
OKLCH	oklch(28.58% 0.13 271.5)
XYZ	xyz(3.3417, 2.0805, 13.5873)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D69 #696317

analogous

#174669 #171D69 #3A1769

triadic

#171D69 #69171D #1D6917

tetradic

#171D69 #691746 #696317 #17693A

square

#171D69 #691746 #696317 #17693A

split-complementary

#171D69 #693A17 #466917

monochromatic

#050719 #0C0F37 #171D69 #222B9B #2D39CD

Accessibility & contrast

On white

14.83

#171D69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#171D69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D69

14.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D69	#FFFFFF	#000000	##FFFFFF
##171D69	1.00	14.83	1.42	14.83
#FFFFFF	14.83	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B6B

Deuteranopia (green-blind)

#002468

Tritanopia (blue-blind)

#003240

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171d69;
/* rgb */ color: rgb(23, 29, 105);
/* oklch */ color: oklch(28.6% 0.130 271.5);

Tailwind

colors: {
  custom: {
    50: '#635995',
    500: '#171d69',
    950: '#000000',
  },
}

SCSS

$custom: #171d69;
$custom-light: #635995;
$custom-dark: #000000;

JSON

{
  "hex": "#171d69",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 105
  },
  "hsl": {
    "h": 235.61,
    "s": 64.063,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28581,
    "c": 0.13004,
    "h": 271.5
  },
  "luminance": 0.02081
}

Semantic roles & 50–950 ramp

primary

#171D69

secondary

#9F983D

accent

#DB41E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171D69

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

Preview Lab → · Contrast checker → · Palette generator →