#173386#173386

#173386 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.8% C 0.143 H 265.3°. Best body text is #FFFFFF at 11.33:1 contrast (WCAG AA passes).

Color values

HEX	#173386
RGB	rgb(23, 51, 134)
HSL	hsl(225, 71%, 31%)
HSV	hsv(225, 83%, 53%)
CMYK	cmyk(82.8%, 61.9%, 0%, 47.5%)
CIE-LAB	lab(24.55, 22.52, -49.32)
CIE-LCH	lch(24.55, 54.22, 294.54°)
OKLab	oklab(35.8% -0.0117 -0.1426)
OKLCH	oklch(35.8% 0.143 265.3)
XYZ	xyz(5.8387, 4.2703, 23.0662)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173386 #866A17

analogous

#176A86 #173386 #321786

triadic

#173386 #861733 #338617

tetradic

#173386 #86176A #866A17 #178632

square

#173386 #86176A #866A17 #178632

split-complementary

#173386 #863217 #6A8617

monochromatic

#050B1E #0E1F52 #173386 #2047BA #3A63DD

Accessibility & contrast

On white

11.33

#173386 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173386 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173386

11.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173386	#FFFFFF	#000000	##FFFFFF
##173386	1.00	11.33	1.85	11.33
#FFFFFF	11.33	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004089

Deuteranopia (green-blind)

#003584

Tritanopia (blue-blind)

#004857

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173386;
/* rgb */ color: rgb(23, 51, 134);
/* oklch */ color: oklch(35.8% 0.143 265.3);

Tailwind

colors: {
  custom: {
    50: '#696aaa',
    500: '#173386',
    950: '#000000',
  },
}

SCSS

$custom: #173386;
$custom-light: #696aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#173386",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 134
  },
  "hsl": {
    "h": 224.865,
    "s": 70.701,
    "l": 30.784
  },
  "oklch": {
    "l": 0.35795,
    "c": 0.1431,
    "h": 265.3
  },
  "luminance": 0.04271
}

Semantic roles & 50–950 ramp

primary

#173386

secondary

#BA9B3F

accent

#C03AED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #173386

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

Preview Lab → · Contrast checker → · Palette generator →