#172379#172379

#172379 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.4% C 0.145 H 269.3°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#172379
RGB	rgb(23, 35, 121)
HSL	hsl(233, 68%, 28%)
HSV	hsv(233, 81%, 47%)
CMYK	cmyk(81%, 71.1%, 0%, 52.5%)
CIE-LAB	lab(19.07, 28.41, -50.08)
CIE-LCH	lch(19.07, 57.57, 299.57°)
OKLab	oklab(31.38% -0.0018 -0.145)
OKLCH	oklch(31.38% 0.145 269.3)
XYZ	xyz(4.4044, 2.7642, 18.3869)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172379 #796D17

analogous

#175479 #172379 #3C1779

triadic

#172379 #791723 #237917

tetradic

#172379 #791754 #796D17 #17793C

square

#172379 #791754 #796D17 #17793C

split-complementary

#172379 #793C17 #547917

monochromatic

#05071A #0D1446 #172379 #2132AC #3247D8

Accessibility & contrast

On white

13.52

#172379 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172379 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172379

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172379	#FFFFFF	#000000	##FFFFFF
##172379	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337C

Deuteranopia (green-blind)

#002A77

Tritanopia (blue-blind)

#003B4B

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172379;
/* rgb */ color: rgb(23, 35, 121);
/* oklch */ color: oklch(31.4% 0.145 269.3);

Tailwind

colors: {
  custom: {
    50: '#675ea1',
    500: '#172379',
    950: '#000000',
  },
}

SCSS

$custom: #172379;
$custom-light: #675ea1;
$custom-dark: #000000;

JSON

{
  "hex": "#172379",
  "rgb": {
    "r": 23,
    "g": 35,
    "b": 121
  },
  "hsl": {
    "h": 232.653,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.31384,
    "c": 0.145,
    "h": 269.3
  },
  "luminance": 0.02765
}

Semantic roles & 50–950 ramp

primary

#172379

secondary

#AEA03E

accent

#D63DEB

background

#F6F5FA

surface

#EBE9F3

border

#C6C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #172379

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

Preview Lab → · Contrast checker → · Palette generator →