#173B94#173B94

#173B94 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.152 H 263.9°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#173B94
RGB	rgb(23, 59, 148)
HSL	hsl(223, 73%, 34%)
HSV	hsv(223, 84%, 58%)
CMYK	cmyk(84.5%, 60.1%, 0%, 42%)
CIE-LAB	lab(27.97, 22.62, -52.39)
CIE-LCH	lch(27.97, 57.06, 293.35°)
OKLab	oklab(38.73% -0.0162 -0.1515)
OKLCH	oklch(38.73% 0.152 263.9)
XYZ	xyz(7.2607, 5.4473, 28.6800)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B94 #947017

analogous

#177994 #173B94 #311794

triadic

#173B94 #94173B #3B9417

tetradic

#173B94 #941779 #947017 #179431

square

#173B94 #941779 #947017 #179431

split-complementary

#173B94 #943117 #799417

monochromatic

#07112A #0F265F #173B94 #1F50C9 #4471E2

Accessibility & contrast

On white

10.05

#173B94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#173B94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B94

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B94	#FFFFFF	#000000	##FFFFFF
##173B94	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004897

Deuteranopia (green-blind)

#003C92

Tritanopia (blue-blind)

#005261

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #173b94;
/* rgb */ color: rgb(23, 59, 148);
/* oklch */ color: oklch(38.7% 0.152 263.9);

Tailwind

colors: {
  custom: {
    50: '#6c70b4',
    500: '#173b94',
    950: '#000000',
  },
}

SCSS

$custom: #173b94;
$custom-light: #6c70b4;
$custom-dark: #000000;

JSON

{
  "hex": "#173b94",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 148
  },
  "hsl": {
    "h": 222.72,
    "s": 73.099,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38734,
    "c": 0.15237,
    "h": 263.9
  },
  "luminance": 0.05448
}

Semantic roles & 50–950 ramp

primary

#173B94

secondary

#C39E44

accent

#BB38F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173B94

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

Preview Lab → · Contrast checker → · Palette generator →