#173D96#173D96

#173D96 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.153 H 263.5°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#173D96
RGB	rgb(23, 61, 150)
HSL	hsl(222, 73%, 34%)
HSV	hsv(222, 85%, 59%)
CMYK	cmyk(84.7%, 59.3%, 0%, 41.2%)
CIE-LAB	lab(28.70, 22.04, -52.43)
CIE-LCH	lch(28.70, 56.88, 292.80°)
OKLab	oklab(39.33% -0.0173 -0.1516)
OKLCH	oklch(39.33% 0.153 263.5)
XYZ	xyz(7.5251, 5.7207, 29.5558)
Luminance	0.0572 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D96 #967017

analogous

#177D96 #173D96 #311796

triadic

#173D96 #96173D #3D9617

tetradic

#173D96 #96177D #967017 #179631

square

#173D96 #96177D #967017 #179631

split-complementary

#173D96 #963117 #7D9617

monochromatic

#07122C #0F2761 #173D96 #1F53CB #4574E2

Accessibility & contrast

On white

9.79

#173D96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#173D96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D96

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D96	#FFFFFF	#000000	##FFFFFF
##173D96	1.00	9.79	2.14	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A99

Deuteranopia (green-blind)

#003E94

Tritanopia (blue-blind)

#005463

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #173d96;
/* rgb */ color: rgb(23, 61, 150);
/* oklch */ color: oklch(39.3% 0.153 263.5);

Tailwind

colors: {
  custom: {
    50: '#6c71b6',
    500: '#173d96',
    950: '#000000',
  },
}

SCSS

$custom: #173d96;
$custom-light: #6c71b6;
$custom-dark: #000000;

JSON

{
  "hex": "#173d96",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 150
  },
  "hsl": {
    "h": 222.047,
    "s": 73.41,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3933,
    "c": 0.15259,
    "h": 263.5
  },
  "luminance": 0.05722
}

Semantic roles & 50–950 ramp

primary

#173D96

secondary

#C39E45

accent

#B938F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173D96

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

Preview Lab → · Contrast checker → · Palette generator →