#173889#173889

#173889 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.1% C 0.141 H 264.0°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#173889
RGB	rgb(23, 56, 137)
HSL	hsl(223, 71%, 31%)
HSV	hsv(223, 83%, 54%)
CMYK	cmyk(83.2%, 59.1%, 0%, 46.3%)
CIE-LAB	lab(26.20, 20.24, -48.48)
CIE-LCH	lch(26.20, 52.54, 292.66°)
OKLab	oklab(37.12% -0.0148 -0.1401)
OKLCH	oklch(37.12% 0.141 264)
XYZ	xyz(6.2813, 4.8159, 24.2606)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173889 #896817

analogous

#177189 #173889 #2F1789

triadic

#173889 #891738 #388917

tetradic

#173889 #891771 #896817 #17892F

square

#173889 #891771 #896817 #17892F

split-complementary

#173889 #892F17 #718917

monochromatic

#050D20 #0E2355 #173889 #204DBD #3C6BDE

Accessibility & contrast

On white

10.70

#173889 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#173889 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173889

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173889	#FFFFFF	#000000	##FFFFFF
##173889	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438C

Deuteranopia (green-blind)

#003987

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173889;
/* rgb */ color: rgb(23, 56, 137);
/* oklch */ color: oklch(37.1% 0.141 264.0);

Tailwind

colors: {
  custom: {
    50: '#696eac',
    500: '#173889',
    950: '#000000',
  },
}

SCSS

$custom: #173889;
$custom-light: #696eac;
$custom-dark: #000000;

JSON

{
  "hex": "#173889",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 137
  },
  "hsl": {
    "h": 222.632,
    "s": 71.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37116,
    "c": 0.14087,
    "h": 264
  },
  "luminance": 0.04817
}

Semantic roles & 50–950 ramp

primary

#173889

secondary

#BD983F

accent

#BA3AEE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #173889

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

Preview Lab → · Contrast checker → · Palette generator →