#173378#173378

#173378 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.5% C 0.123 H 264.2°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#173378
RGB	rgb(23, 51, 120)
HSL	hsl(223, 68%, 28%)
HSV	hsv(223, 81%, 47%)
CMYK	cmyk(80.8%, 57.5%, 0%, 52.9%)
CIE-LAB	lab(23.36, 16.78, -42.44)
CIE-LCH	lch(23.36, 45.63, 291.58°)
OKLab	oklab(34.53% -0.0124 -0.1224)
OKLCH	oklch(34.53% 0.123 264.2)
XYZ	xyz(4.9261, 3.9053, 18.2598)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173378 #785C17

analogous

#176378 #173378 #2B1778

triadic

#173378 #781733 #337817

tetradic

#173378 #781763 #785C17 #17782B

square

#173378 #781763 #785C17 #17782B

split-complementary

#173378 #782B17 #637817

monochromatic

#050B1A #0D1D45 #173378 #2149AB #3262D8

Accessibility & contrast

On white

11.79

#173378 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#173378 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173378

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173378	#FFFFFF	#000000	##FFFFFF
##173378	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7A

Deuteranopia (green-blind)

#003377

Tritanopia (blue-blind)

#004450

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173378;
/* rgb */ color: rgb(23, 51, 120);
/* oklch */ color: oklch(34.5% 0.123 264.2);

Tailwind

colors: {
  custom: {
    50: '#656aa0',
    500: '#173378',
    950: '#000000',
  },
}

SCSS

$custom: #173378;
$custom-light: #656aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#173378",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 120
  },
  "hsl": {
    "h": 222.68,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.3453,
    "c": 0.12304,
    "h": 264.2
  },
  "luminance": 0.03906
}

Semantic roles & 50–950 ramp

primary

#173378

secondary

#AD8D3E

accent

#B93DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060F

muted

#7A7A7E

Preview Lab

Preview with #173378

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

Preview Lab → · Contrast checker → · Palette generator →