#171D56#171D56

#171D56 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.102 H 272.7°. Best body text is #FFFFFF at 15.59:1 contrast (WCAG AA passes).

Color values

HEX	#171D56
RGB	rgb(23, 29, 86)
HSL	hsl(234, 58%, 21%)
HSV	hsv(234, 73%, 34%)
CMYK	cmyk(73.3%, 66.3%, 0%, 66.3%)
CIE-LAB	lab(14.02, 18.76, -35.39)
CIE-LCH	lch(14.02, 40.06, 297.93°)
OKLab	oklab(26.62% 0.0049 -0.102)
OKLCH	oklch(26.62% 0.102 272.7)
XYZ	xyz(2.4719, 1.7325, 9.0064)
Luminance	0.0173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D56 #565017

analogous

#173D56 #171D56 #311756

triadic

#171D56 #56171D #1D5617

tetradic

#171D56 #56173D #565017 #175631

square

#171D56 #56173D #565017 #175631

split-complementary

#171D56 #563117 #3D5617

monochromatic

#060818 #0A0D26 #171D56 #242D86 #313EB7

Accessibility & contrast

On white

15.59

#171D56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#171D56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D56

15.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D56	#FFFFFF	#000000	##FFFFFF
##171D56	1.00	15.59	1.35	15.59
#FFFFFF	15.59	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002758

Deuteranopia (green-blind)

#002155

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #171d56;
/* rgb */ color: rgb(23, 29, 86);
/* oklch */ color: oklch(26.6% 0.102 272.7);

Tailwind

colors: {
  custom: {
    50: '#5e5886',
    500: '#171d56',
    950: '#000000',
  },
}

SCSS

$custom: #171d56;
$custom-light: #5e5886;
$custom-dark: #000000;

JSON

{
  "hex": "#171d56",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 86
  },
  "hsl": {
    "h": 234.286,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.26622,
    "c": 0.10216,
    "h": 272.7
  },
  "luminance": 0.01733
}

Semantic roles & 50–950 ramp

primary

#171D56

secondary

#8D853C

accent

#D247E1

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #171D56

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

Preview Lab → · Contrast checker → · Palette generator →