#173686#173686

#173686 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.4% C 0.139 H 264.4°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#173686
RGB	rgb(23, 54, 134)
HSL	hsl(223, 71%, 31%)
HSV	hsv(223, 83%, 53%)
CMYK	cmyk(82.8%, 59.7%, 0%, 47.5%)
CIE-LAB	lab(25.38, 20.42, -47.95)
CIE-LCH	lch(25.38, 52.12, 293.06°)
OKLab	oklab(36.42% -0.0137 -0.1386)
OKLCH	oklch(36.42% 0.139 264.4)
XYZ	xyz(5.9741, 4.5410, 23.1113)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173686 #866717

analogous

#176D86 #173686 #2F1786

triadic

#173686 #861736 #368617

tetradic

#173686 #86176D #866717 #17862F

square

#173686 #86176D #866717 #17862F

split-complementary

#173686 #862F17 #6D8617

monochromatic

#050C1E #0E2152 #173686 #204BBA #3A68DD

Accessibility & contrast

On white

11.00

#173686 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#173686 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173686

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173686	#FFFFFF	#000000	##FFFFFF
##173686	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004189

Deuteranopia (green-blind)

#003784

Tritanopia (blue-blind)

#004A58

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173686;
/* rgb */ color: rgb(23, 54, 134);
/* oklch */ color: oklch(36.4% 0.139 264.4);

Tailwind

colors: {
  custom: {
    50: '#686caa',
    500: '#173686',
    950: '#000000',
  },
}

SCSS

$custom: #173686;
$custom-light: #686caa;
$custom-dark: #000000;

JSON

{
  "hex": "#173686",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 134
  },
  "hsl": {
    "h": 223.243,
    "s": 70.701,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36422,
    "c": 0.13923,
    "h": 264.4
  },
  "luminance": 0.04542
}

Semantic roles & 50–950 ramp

primary

#173686

secondary

#BA983F

accent

#BB3AED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #173686

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

Preview Lab → · Contrast checker → · Palette generator →