#173575#173575

#173575 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.116 H 262.9°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#173575
RGB	rgb(23, 53, 117)
HSL	hsl(221, 67%, 27%)
HSV	hsv(221, 80%, 46%)
CMYK	cmyk(80.3%, 54.7%, 0%, 54.1%)
CIE-LAB	lab(23.71, 14.11, -39.95)
CIE-LCH	lch(23.71, 42.37, 289.45°)
OKLab	oklab(34.72% -0.0143 -0.1151)
OKLCH	oklch(34.72% 0.116 262.9)
XYZ	xyz(4.8362, 4.0122, 17.3457)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173575 #755717

analogous

#176475 #173575 #281775

triadic

#173575 #751735 #357517

tetradic

#173575 #751764 #755717 #177528

square

#173575 #751764 #755717 #177528

split-complementary

#173575 #752817 #647517

monochromatic

#050C1A #0D1E42 #173575 #214CA8 #3065D6

Accessibility & contrast

On white

11.65

#173575 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#173575 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173575

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173575	#FFFFFF	#000000	##FFFFFF
##173575	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)

#083D77

Deuteranopia (green-blind)

#003474

Tritanopia (blue-blind)

#00454F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173575;
/* rgb */ color: rgb(23, 53, 117);
/* oklch */ color: oklch(34.7% 0.116 262.9);

Tailwind

colors: {
  custom: {
    50: '#646b9d',
    500: '#173575',
    950: '#000000',
  },
}

SCSS

$custom: #173575;
$custom-light: #646b9d;
$custom-dark: #000000;

JSON

{
  "hex": "#173575",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 117
  },
  "hsl": {
    "h": 220.851,
    "s": 67.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.34724,
    "c": 0.11594,
    "h": 262.9
  },
  "luminance": 0.04013
}

Semantic roles & 50–950 ramp

primary

#173575

secondary

#AA883D

accent

#B33EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173575

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

Preview Lab → · Contrast checker → · Palette generator →