#173671#173671

#173671 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.109 H 261.7°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#173671
RGB	rgb(23, 54, 113)
HSL	hsl(219, 66%, 27%)
HSV	hsv(219, 80%, 44%)
CMYK	cmyk(79.6%, 52.2%, 0%, 55.7%)
CIE-LAB	lab(23.71, 11.73, -37.40)
CIE-LCH	lch(23.71, 39.19, 287.41°)
OKLab	oklab(34.63% -0.0157 -0.1075)
OKLCH	oklch(34.63% 0.109 261.7)
XYZ	xyz(4.6521, 4.0122, 16.1488)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173671 #715217

analogous

#176371 #173671 #251771

triadic

#173671 #711736 #367117

tetradic

#173671 #711763 #715217 #177125

square

#173671 #711763 #715217 #177125

split-complementary

#173671 #712517 #637117

monochromatic

#050C19 #0D1E3E #173671 #214EA4 #2E67D4

Accessibility & contrast

On white

11.65

#173671 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#173671 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173671

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173671	#FFFFFF	#000000	##FFFFFF
##173671	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133D73

Deuteranopia (green-blind)

#003570

Tritanopia (blue-blind)

#00444E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173671;
/* rgb */ color: rgb(23, 54, 113);
/* oklch */ color: oklch(34.6% 0.109 261.7);

Tailwind

colors: {
  custom: {
    50: '#636c9a',
    500: '#173671',
    950: '#000000',
  },
}

SCSS

$custom: #173671;
$custom-light: #636c9a;
$custom-dark: #000000;

JSON

{
  "hex": "#173671",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 113
  },
  "hsl": {
    "h": 219.333,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.34627,
    "c": 0.10867,
    "h": 261.7
  },
  "luminance": 0.04013
}

Semantic roles & 50–950 ramp

primary

#173671

secondary

#A7823D

accent

#AE3FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173671

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

Preview Lab → · Contrast checker → · Palette generator →