#173B96#173B96

#173B96 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.155 H 264.0°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#173B96
RGB	rgb(23, 59, 150)
HSL	hsl(223, 73%, 34%)
HSV	hsv(223, 85%, 59%)
CMYK	cmyk(84.7%, 60.7%, 0%, 41.2%)
CIE-LAB	lab(28.14, 23.42, -53.33)
CIE-LCH	lch(28.14, 58.25, 293.71°)
OKLab	oklab(38.92% -0.0161 -0.1543)
OKLCH	oklch(38.92% 0.155 264)
XYZ	xyz(7.4204, 5.5112, 29.5209)
Luminance	0.0551 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B96 #967217

analogous

#177B96 #173B96 #331796

triadic

#173B96 #96173B #3B9617

tetradic

#173B96 #96177B #967217 #179633

square

#173B96 #96177B #967217 #179633

split-complementary

#173B96 #963317 #7B9617

monochromatic

#07112C #0F2661 #173B96 #1F50CB #4572E2

Accessibility & contrast

On white

9.99

#173B96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#173B96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B96

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B96	#FFFFFF	#000000	##FFFFFF
##173B96	1.00	9.99	2.10	9.99
#FFFFFF	9.99	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004899

Deuteranopia (green-blind)

#003D94

Tritanopia (blue-blind)

#005262

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #173b96;
/* rgb */ color: rgb(23, 59, 150);
/* oklch */ color: oklch(38.9% 0.155 264.0);

Tailwind

colors: {
  custom: {
    50: '#6c70b6',
    500: '#173b96',
    950: '#000000',
  },
}

SCSS

$custom: #173b96;
$custom-light: #6c70b6;
$custom-dark: #000000;

JSON

{
  "hex": "#173b96",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 150
  },
  "hsl": {
    "h": 222.992,
    "s": 73.41,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38915,
    "c": 0.15511,
    "h": 264
  },
  "luminance": 0.05512
}

Semantic roles & 50–950 ramp

primary

#173B96

secondary

#C3A045

accent

#BC38F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173B96

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

Preview Lab → · Contrast checker → · Palette generator →