#173689#173689

#173689 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.143 H 264.6°. Best body text is #FFFFFF at 10.91:1 contrast (WCAG AA passes).

Color values

HEX	#173689
RGB	rgb(23, 54, 137)
HSL	hsl(224, 71%, 31%)
HSV	hsv(224, 83%, 54%)
CMYK	cmyk(83.2%, 60.6%, 0%, 46.3%)
CIE-LAB	lab(25.64, 21.64, -49.40)
CIE-LCH	lch(25.64, 53.93, 293.65°)
OKLab	oklab(36.69% -0.0135 -0.1428)
OKLCH	oklch(36.69% 0.143 264.6)
XYZ	xyz(6.1863, 4.6259, 24.2289)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173689 #896A17

analogous

#176F89 #173689 #311789

triadic

#173689 #891736 #368917

tetradic

#173689 #89176F #896A17 #178931

square

#173689 #89176F #896A17 #178931

split-complementary

#173689 #893117 #6F8917

monochromatic

#050D20 #0E2155 #173689 #204BBD #3C68DE

Accessibility & contrast

On white

10.91

#173689 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#173689 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173689

10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173689	#FFFFFF	#000000	##FFFFFF
##173689	1.00	10.91	1.93	10.91
#FFFFFF	10.91	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428C

Deuteranopia (green-blind)

#003887

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173689;
/* rgb */ color: rgb(23, 54, 137);
/* oklch */ color: oklch(36.7% 0.143 264.6);

Tailwind

colors: {
  custom: {
    50: '#696cac',
    500: '#173689',
    950: '#000000',
  },
}

SCSS

$custom: #173689;
$custom-light: #696cac;
$custom-dark: #000000;

JSON

{
  "hex": "#173689",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 137
  },
  "hsl": {
    "h": 223.684,
    "s": 71.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.36694,
    "c": 0.14345,
    "h": 264.6
  },
  "luminance": 0.04627
}

Semantic roles & 50–950 ramp

primary

#173689

secondary

#BD9B3F

accent

#BD3AEE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #173689

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

Preview Lab → · Contrast checker → · Palette generator →