#173379#173379

#173379 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.6% C 0.124 H 264.3°. Best body text is #FFFFFF at 11.76:1 contrast (WCAG AA passes).

Color values

HEX	#173379
RGB	rgb(23, 51, 121)
HSL	hsl(223, 68%, 28%)
HSV	hsv(223, 81%, 47%)
CMYK	cmyk(81%, 57.9%, 0%, 52.5%)
CIE-LAB	lab(23.44, 17.20, -42.94)
CIE-LCH	lch(23.44, 46.25, 291.82°)
OKLab	oklab(34.62% -0.0123 -0.1239)
OKLCH	oklch(34.62% 0.125 264.3)
XYZ	xyz(4.9871, 3.9297, 18.5811)
Luminance	0.0393 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173379 #795D17

analogous

#176479 #173379 #2C1779

triadic

#173379 #791733 #337917

tetradic

#173379 #791764 #795D17 #17792C

square

#173379 #791764 #795D17 #17792C

split-complementary

#173379 #792C17 #647917

monochromatic

#050B1A #0D1D46 #173379 #2149AC #3262D8

Accessibility & contrast

On white

11.76

#173379 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#173379 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173379

11.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173379	#FFFFFF	#000000	##FFFFFF
##173379	1.00	11.76	1.79	11.76
#FFFFFF	11.76	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7B

Deuteranopia (green-blind)

#003478

Tritanopia (blue-blind)

#004450

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173379;
/* rgb */ color: rgb(23, 51, 121);
/* oklch */ color: oklch(34.6% 0.124 264.3);

Tailwind

colors: {
  custom: {
    50: '#656aa0',
    500: '#173379',
    950: '#000000',
  },
}

SCSS

$custom: #173379;
$custom-light: #656aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#173379",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 121
  },
  "hsl": {
    "h": 222.857,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.34617,
    "c": 0.1245,
    "h": 264.3
  },
  "luminance": 0.0393
}

Semantic roles & 50–950 ramp

primary

#173379

secondary

#AE8E3E

accent

#B93DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060F

muted

#7A7A7E

Preview Lab

Preview with #173379

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

Preview Lab → · Contrast checker → · Palette generator →