#173768#173768

#173768 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.2% C 0.094 H 258.8°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#173768
RGB	rgb(23, 55, 104)
HSL	hsl(216, 64%, 25%)
HSV	hsv(216, 78%, 41%)
CMYK	cmyk(77.9%, 47.1%, 0%, 59.2%)
CIE-LAB	lab(23.38, 7.26, -32.14)
CIE-LCH	lch(23.38, 32.95, 282.72°)
OKLab	oklab(34.17% -0.0182 -0.092)
OKLCH	oklch(34.17% 0.094 258.8)
XYZ	xyz(4.2173, 3.9135, 13.6271)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173768 #684817

analogous

#176068 #173768 #1F1768

triadic

#173768 #681737 #376817

tetradic

#173768 #681760 #684817 #17681F

square

#173768 #681760 #684817 #17681F

split-complementary

#173768 #681F17 #606817

monochromatic

#060D19 #0C1C36 #173768 #22529A #2D6CCC

Accessibility & contrast

On white

11.78

#173768 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#173768 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173768

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173768	#FFFFFF	#000000	##FFFFFF
##173768	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E3C6A

Deuteranopia (green-blind)

#0E3467

Tritanopia (blue-blind)

#00434A

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173768;
/* rgb */ color: rgb(23, 55, 104);
/* oklch */ color: oklch(34.2% 0.094 258.8);

Tailwind

colors: {
  custom: {
    50: '#616d93',
    500: '#173768',
    950: '#000000',
  },
}

SCSS

$custom: #173768;
$custom-light: #616d93;
$custom-dark: #000000;

JSON

{
  "hex": "#173768",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 104
  },
  "hsl": {
    "h": 216.296,
    "s": 63.78,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34169,
    "c": 0.09381,
    "h": 258.8
  },
  "luminance": 0.03914
}

Semantic roles & 50–950 ramp

primary

#173768

secondary

#9E783D

accent

#A541E7

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #173768

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

Preview Lab → · Contrast checker → · Palette generator →