#173E90#173E90

#173E90 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.0% C 0.143 H 262.6°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#173E90
RGB	rgb(23, 62, 144)
HSL	hsl(221, 72%, 33%)
HSV	hsv(221, 84%, 56%)
CMYK	cmyk(84%, 56.9%, 0%, 43.5%)
CIE-LAB	lab(28.49, 18.91, -49.10)
CIE-LCH	lch(28.49, 52.61, 291.06°)
OKLab	oklab(39.02% -0.0184 -0.1418)
OKLCH	oklch(39.02% 0.143 262.6)
XYZ	xyz(7.1082, 5.6402, 27.0942)
Luminance	0.0564 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E90 #906917

analogous

#177A90 #173E90 #2C1790

triadic

#173E90 #90173E #3E9017

tetradic

#173E90 #90177A #906917 #17902C

square

#173E90 #90177A #906917 #17902C

split-complementary

#173E90 #902C17 #7A9017

monochromatic

#061126 #0F275B #173E90 #1F55C5 #4174E1

Accessibility & contrast

On white

9.87

#173E90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#173E90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E90

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E90	#FFFFFF	#000000	##FFFFFF
##173E90	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004993

Deuteranopia (green-blind)

#003E8E

Tritanopia (blue-blind)

#005260

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #173e90;
/* rgb */ color: rgb(23, 62, 144);
/* oklch */ color: oklch(39.0% 0.143 262.6);

Tailwind

colors: {
  custom: {
    50: '#6b72b1',
    500: '#173e90',
    950: '#000000',
  },
}

SCSS

$custom: #173e90;
$custom-light: #6b72b1;
$custom-dark: #000000;

JSON

{
  "hex": "#173e90",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 144
  },
  "hsl": {
    "h": 220.661,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.39016,
    "c": 0.14297,
    "h": 262.6
  },
  "luminance": 0.05641
}

Semantic roles & 50–950 ramp

primary

#173E90

secondary

#C19842

accent

#B439EF

background

#F6F6FB

surface

#ECECF6

border

#C7C7D0

text

#080811

muted

#7A7B80

Preview Lab

Preview with #173E90

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

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