#173684#173684

#173684 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.2% C 0.136 H 264.2°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#173684
RGB	rgb(23, 54, 132)
HSL	hsl(223, 70%, 30%)
HSV	hsv(223, 83%, 52%)
CMYK	cmyk(82.6%, 59.1%, 0%, 48.2%)
CIE-LAB	lab(25.22, 19.60, -46.98)
CIE-LCH	lch(25.22, 50.90, 292.65°)
OKLab	oklab(36.24% -0.0138 -0.1357)
OKLCH	oklch(36.24% 0.136 264.2)
XYZ	xyz(5.8359, 4.4857, 22.3836)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173684 #846517

analogous

#176C84 #173684 #2E1784

triadic

#173684 #841736 #368417

tetradic

#173684 #84176C #846517 #17842E

square

#173684 #84176C #846517 #17842E

split-complementary

#173684 #842E17 #6C8417

monochromatic

#050B1C #0E2150 #173684 #204BB8 #3967DC

Accessibility & contrast

On white

11.07

#173684 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#173684 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173684

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173684	#FFFFFF	#000000	##FFFFFF
##173684	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004187

Deuteranopia (green-blind)

#003782

Tritanopia (blue-blind)

#004A57

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173684;
/* rgb */ color: rgb(23, 54, 132);
/* oklch */ color: oklch(36.2% 0.136 264.2);

Tailwind

colors: {
  custom: {
    50: '#686ca8',
    500: '#173684',
    950: '#000000',
  },
}

SCSS

$custom: #173684;
$custom-light: #686ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#173684",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 132
  },
  "hsl": {
    "h": 222.936,
    "s": 70.323,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36243,
    "c": 0.13639,
    "h": 264.2
  },
  "luminance": 0.04486
}

Semantic roles & 50–950 ramp

primary

#173684

secondary

#B8963F

accent

#BA3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #173684

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

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