#173377#173377

#173377 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.4% C 0.122 H 264.1°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#173377
RGB	rgb(23, 51, 119)
HSL	hsl(223, 68%, 28%)
HSV	hsv(223, 81%, 47%)
CMYK	cmyk(80.7%, 57.1%, 0%, 53.3%)
CIE-LAB	lab(23.27, 16.37, -41.93)
CIE-LCH	lch(23.27, 45.01, 291.32°)
OKLab	oklab(34.44% -0.0125 -0.1209)
OKLCH	oklch(34.44% 0.122 264.1)
XYZ	xyz(4.8658, 3.8812, 17.9419)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173377 #775B17

analogous

#176377 #173377 #2B1777

triadic

#173377 #771733 #337717

tetradic

#173377 #771763 #775B17 #17772B

square

#173377 #771763 #775B17 #17772B

split-complementary

#173377 #772B17 #637717

monochromatic

#050B1A #0D1D44 #173377 #2149AA #3162D7

Accessibility & contrast

On white

11.82

#173377 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#173377 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173377

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173377	#FFFFFF	#000000	##FFFFFF
##173377	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C79

Deuteranopia (green-blind)

#003376

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173377;
/* rgb */ color: rgb(23, 51, 119);
/* oklch */ color: oklch(34.4% 0.122 264.1);

Tailwind

colors: {
  custom: {
    50: '#656a9f',
    500: '#173377',
    950: '#000000',
  },
}

SCSS

$custom: #173377;
$custom-light: #656a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#173377",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 119
  },
  "hsl": {
    "h": 222.5,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.34443,
    "c": 0.12157,
    "h": 264.1
  },
  "luminance": 0.03882
}

Semantic roles & 50–950 ramp

primary

#173377

secondary

#AC8C3E

accent

#B83DEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173377

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

Preview Lab → · Contrast checker → · Palette generator →