#173A93#173A93

#173A93 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.4% C 0.152 H 264.1°. Best body text is #FFFFFF at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#173A93
RGB	rgb(23, 58, 147)
HSL	hsl(223, 73%, 33%)
HSV	hsv(223, 84%, 58%)
CMYK	cmyk(84.4%, 60.5%, 0%, 42.4%)
CIE-LAB	lab(27.61, 22.90, -52.37)
CIE-LCH	lch(27.61, 57.16, 293.62°)
OKLab	oklab(38.44% -0.0156 -0.1514)
OKLCH	oklch(38.44% 0.152 264.1)
XYZ	xyz(7.1310, 5.3140, 28.2480)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A93 #937017

analogous

#177893 #173A93 #321793

triadic

#173A93 #93173A #3A9317

tetradic

#173A93 #931778 #937017 #179332

square

#173A93 #931778 #937017 #179332

split-complementary

#173A93 #933217 #789317

monochromatic

#061029 #0F255E #173A93 #1F4FC8 #4370E2

Accessibility & contrast

On white

10.18

#173A93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#173A93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A93

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A93	#FFFFFF	#000000	##FFFFFF
##173A93	1.00	10.18	2.06	10.18
#FFFFFF	10.18	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004796

Deuteranopia (green-blind)

#003C91

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #173a93;
/* rgb */ color: rgb(23, 58, 147);
/* oklch */ color: oklch(38.4% 0.152 264.1);

Tailwind

colors: {
  custom: {
    50: '#6c6fb3',
    500: '#173a93',
    950: '#000000',
  },
}

SCSS

$custom: #173a93;
$custom-light: #6c6fb3;
$custom-dark: #000000;

JSON

{
  "hex": "#173a93",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 147
  },
  "hsl": {
    "h": 223.065,
    "s": 72.941,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38437,
    "c": 0.15226,
    "h": 264.1
  },
  "luminance": 0.05315
}

Semantic roles & 50–950 ramp

primary

#173A93

secondary

#C29E44

accent

#BC38F0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #173A93

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

Preview Lab → · Contrast checker → · Palette generator →