#171D89#171D89

#171D89 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.2% C 0.172 H 269.5°. Best body text is #FFFFFF at 13.35:1 contrast (WCAG AA passes).

Color values

HEX	#171D89
RGB	rgb(23, 29, 137)
HSL	hsl(237, 71%, 31%)
HSV	hsv(237, 83%, 54%)
CMYK	cmyk(83.2%, 78.8%, 0%, 46.3%)
CIE-LAB	lab(19.50, 38.08, -59.50)
CIE-LCH	lch(19.50, 70.64, 302.62°)
OKLab	oklab(32.22% -0.0016 -0.1724)
OKLCH	oklch(32.22% 0.172 269.5)
XYZ	xyz(5.3065, 2.8664, 23.9357)
Luminance	0.0287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D89 #898317

analogous

#175689 #171D89 #4A1789

triadic

#171D89 #89171D #1D8917

tetradic

#171D89 #891756 #898317 #17894A

square

#171D89 #891756 #898317 #17894A

split-complementary

#171D89 #894A17 #568917

monochromatic

#050720 #0E1255 #171D89 #2028BD #3C45DE

Accessibility & contrast

On white

13.35

#171D89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#171D89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D89

13.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D89	#FFFFFF	#000000	##FFFFFF
##171D89	1.00	13.35	1.57	13.35
#FFFFFF	13.35	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358C

Deuteranopia (green-blind)

#002987

Tritanopia (blue-blind)

#003E52

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #171d89;
/* rgb */ color: rgb(23, 29, 137);
/* oklch */ color: oklch(32.2% 0.172 269.5);

Tailwind

colors: {
  custom: {
    50: '#6c5bad',
    500: '#171d89',
    950: '#000000',
  },
}

SCSS

$custom: #171d89;
$custom-light: #6c5bad;
$custom-dark: #000000;

JSON

{
  "hex": "#171d89",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 137
  },
  "hsl": {
    "h": 236.842,
    "s": 71.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.32218,
    "c": 0.17237,
    "h": 269.5
  },
  "luminance": 0.02867
}

Semantic roles & 50–950 ramp

primary

#171D89

secondary

#BDB63F

accent

#E53AEE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #171D89

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

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