#171C56#171C56

#171C56 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.4% C 0.104 H 273.2°. Best body text is #FFFFFF at 15.71:1 contrast (WCAG AA passes).

Color values

HEX	#171C56
RGB	rgb(23, 28, 86)
HSL	hsl(235, 58%, 21%)
HSV	hsv(235, 73%, 34%)
CMYK	cmyk(73.3%, 67.4%, 0%, 66.3%)
CIE-LAB	lab(13.73, 19.49, -35.85)
CIE-LCH	lch(13.73, 40.80, 298.53°)
OKLab	oklab(26.42% 0.0058 -0.1034)
OKLCH	oklch(26.42% 0.104 273.2)
XYZ	xyz(2.4478, 1.6843, 8.9984)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C56 #565117

analogous

#173C56 #171C56 #321756

triadic

#171C56 #56171C #1C5617

tetradic

#171C56 #56173C #565117 #175632

square

#171C56 #56173C #565117 #175632

split-complementary

#171C56 #563217 #3C5617

monochromatic

#060818 #0A0C26 #171C56 #242C86 #313BB7

Accessibility & contrast

On white

15.71

#171C56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#171C56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C56

15.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C56	#FFFFFF	#000000	##FFFFFF
##171C56	1.00	15.71	1.34	15.71
#FFFFFF	15.71	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002658

Deuteranopia (green-blind)

#002055

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171c56;
/* rgb */ color: rgb(23, 28, 86);
/* oklch */ color: oklch(26.4% 0.104 273.2);

Tailwind

colors: {
  custom: {
    50: '#5e5886',
    500: '#171c56',
    950: '#000000',
  },
}

SCSS

$custom: #171c56;
$custom-light: #5e5886;
$custom-dark: #000000;

JSON

{
  "hex": "#171c56",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 86
  },
  "hsl": {
    "h": 235.238,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.26415,
    "c": 0.10356,
    "h": 273.2
  },
  "luminance": 0.01685
}

Semantic roles & 50–950 ramp

primary

#171C56

secondary

#8D873C

accent

#D547E1

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #171C56

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

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