#173183#173183

#173183 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.1% C 0.141 H 265.8°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#173183
RGB	rgb(23, 49, 131)
HSL	hsl(226, 70%, 30%)
HSV	hsv(226, 82%, 51%)
CMYK	cmyk(82.4%, 62.6%, 0%, 48.6%)
CIE-LAB	lab(23.73, 22.71, -48.78)
CIE-LCH	lch(23.73, 53.80, 294.96°)
OKLab	oklab(35.1% -0.0105 -0.1411)
OKLCH	oklch(35.1% 0.141 265.8)
XYZ	xyz(5.5470, 4.0168, 21.9513)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173183 #836917

analogous

#176783 #173183 #331783

triadic

#173183 #831731 #318317

tetradic

#173183 #831767 #836917 #178333

square

#173183 #831767 #836917 #178333

split-complementary

#173183 #833317 #678317

monochromatic

#050A1B #0E1E4F #173183 #2044B7 #3860DC

Accessibility & contrast

On white

11.64

#173183 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#173183 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173183

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173183	#FFFFFF	#000000	##FFFFFF
##173183	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E86

Deuteranopia (green-blind)

#003481

Tritanopia (blue-blind)

#004655

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173183;
/* rgb */ color: rgb(23, 49, 131);
/* oklch */ color: oklch(35.1% 0.141 265.8);

Tailwind

colors: {
  custom: {
    50: '#6868a8',
    500: '#173183',
    950: '#000000',
  },
}

SCSS

$custom: #173183;
$custom-light: #6868a8;
$custom-dark: #000000;

JSON

{
  "hex": "#173183",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 131
  },
  "hsl": {
    "h": 225.556,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.35102,
    "c": 0.14145,
    "h": 265.8
  },
  "luminance": 0.04017
}

Semantic roles & 50–950 ramp

primary

#173183

secondary

#B79A3F

accent

#C23BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #173183

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

Preview Lab → · Contrast checker → · Palette generator →