#173F96#173F96

#173F96 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.8% C 0.150 H 262.9°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#173F96
RGB	rgb(23, 63, 150)
HSL	hsl(221, 73%, 34%)
HSV	hsv(221, 85%, 59%)
CMYK	cmyk(84.7%, 58%, 0%, 41.2%)
CIE-LAB	lab(29.26, 20.66, -51.52)
CIE-LCH	lch(29.26, 55.51, 291.85°)
OKLab	oklab(39.75% -0.0186 -0.1489)
OKLCH	oklch(39.75% 0.15 262.9)
XYZ	xyz(7.6339, 5.9382, 29.5921)
Luminance	0.0594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F96 #966E17

analogous

#177F96 #173F96 #2F1796

triadic

#173F96 #96173F #3F9617

tetradic

#173F96 #96177F #966E17 #17962F

square

#173F96 #96177F #966E17 #17962F

split-complementary

#173F96 #962F17 #7F9617

monochromatic

#07122C #0F2961 #173F96 #1F55CB #4577E2

Accessibility & contrast

On white

9.60

#173F96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#173F96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F96

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F96	#FFFFFF	#000000	##FFFFFF
##173F96	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B99

Deuteranopia (green-blind)

#003F94

Tritanopia (blue-blind)

#005564

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #173f96;
/* rgb */ color: rgb(23, 63, 150);
/* oklch */ color: oklch(39.8% 0.150 262.9);

Tailwind

colors: {
  custom: {
    50: '#6c73b6',
    500: '#173f96',
    950: '#000000',
  },
}

SCSS

$custom: #173f96;
$custom-light: #6c73b6;
$custom-dark: #000000;

JSON

{
  "hex": "#173f96",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 150
  },
  "hsl": {
    "h": 221.102,
    "s": 73.41,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3975,
    "c": 0.15004,
    "h": 262.9
  },
  "luminance": 0.05939
}

Semantic roles & 50–950 ramp

primary

#173F96

secondary

#C39C45

accent

#B638F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #173F96

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

Preview Lab → · Contrast checker → · Palette generator →