#173986#173986

#173986 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.1% C 0.135 H 263.3°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#173986
RGB	rgb(23, 57, 134)
HSL	hsl(222, 71%, 31%)
HSV	hsv(222, 83%, 53%)
CMYK	cmyk(82.8%, 57.5%, 0%, 47.5%)
CIE-LAB	lab(26.24, 18.31, -46.56)
CIE-LCH	lch(26.24, 50.03, 291.47°)
OKLab	oklab(37.07% -0.0157 -0.1344)
OKLCH	oklch(37.07% 0.135 263.3)
XYZ	xyz(6.1180, 4.8289, 23.1593)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173986 #866417

analogous

#177086 #173986 #2D1786

triadic

#173986 #861739 #398617

tetradic

#173986 #861770 #866417 #17862D

square

#173986 #861770 #866417 #17862D

split-complementary

#173986 #862D17 #708617

monochromatic

#050D1E #0E2352 #173986 #204FBA #3A6CDD

Accessibility & contrast

On white

10.68

#173986 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#173986 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173986

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173986	#FFFFFF	#000000	##FFFFFF
##173986	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004389

Deuteranopia (green-blind)

#003984

Tritanopia (blue-blind)

#004C59

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173986;
/* rgb */ color: rgb(23, 57, 134);
/* oklch */ color: oklch(37.1% 0.135 263.3);

Tailwind

colors: {
  custom: {
    50: '#686eaa',
    500: '#173986',
    950: '#000000',
  },
}

SCSS

$custom: #173986;
$custom-light: #686eaa;
$custom-dark: #000000;

JSON

{
  "hex": "#173986",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 134
  },
  "hsl": {
    "h": 221.622,
    "s": 70.701,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37067,
    "c": 0.13532,
    "h": 263.3
  },
  "luminance": 0.0483
}

Semantic roles & 50–950 ramp

primary

#173986

secondary

#BA943F

accent

#B73AED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #173986

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

Preview Lab → · Contrast checker → · Palette generator →