#173679#173679

#173679 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.3% C 0.120 H 263.0°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#173679
RGB	rgb(23, 54, 121)
HSL	hsl(221, 68%, 28%)
HSV	hsv(221, 81%, 47%)
CMYK	cmyk(81%, 55.4%, 0%, 52.5%)
CIE-LAB	lab(24.32, 15.06, -41.50)
CIE-LCH	lch(24.32, 44.15, 289.94°)
OKLab	oklab(35.29% -0.0147 -0.1196)
OKLCH	oklch(35.29% 0.121 263)
XYZ	xyz(5.1225, 4.2004, 18.6262)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173679 #795A17

analogous

#176779 #173679 #291779

triadic

#173679 #791736 #367917

tetradic

#173679 #791767 #795A17 #177929

square

#173679 #791767 #795A17 #177929

split-complementary

#173679 #792917 #677917

monochromatic

#050B1A #0D1F46 #173679 #214DAC #3267D8

Accessibility & contrast

On white

11.41

#173679 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173679 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173679

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173679	#FFFFFF	#000000	##FFFFFF
##173679	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#033F7B

Deuteranopia (green-blind)

#003678

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173679;
/* rgb */ color: rgb(23, 54, 121);
/* oklch */ color: oklch(35.3% 0.120 263.0);

Tailwind

colors: {
  custom: {
    50: '#656ca0',
    500: '#173679',
    950: '#000000',
  },
}

SCSS

$custom: #173679;
$custom-light: #656ca0;
$custom-dark: #000000;

JSON

{
  "hex": "#173679",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 121
  },
  "hsl": {
    "h": 221.02,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35287,
    "c": 0.1205,
    "h": 263
  },
  "luminance": 0.04201
}

Semantic roles & 50–950 ramp

primary

#173679

secondary

#AE8B3E

accent

#B43DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060F

muted

#7A7A7E

Preview Lab

Preview with #173679

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

Preview Lab → · Contrast checker → · Palette generator →