#173287#173287

#173287 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.7% C 0.146 H 265.6°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#173287
RGB	rgb(23, 50, 135)
HSL	hsl(226, 71%, 31%)
HSV	hsv(226, 83%, 53%)
CMYK	cmyk(83%, 63%, 0%, 47.1%)
CIE-LAB	lab(24.36, 23.62, -50.25)
CIE-LCH	lch(24.36, 55.52, 295.18°)
OKLab	oklab(35.68% -0.0111 -0.1454)
OKLCH	oklch(35.68% 0.146 265.6)
XYZ	xyz(5.8656, 4.2119, 23.4208)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173287 #876C17

analogous

#176A87 #173287 #341787

triadic

#173287 #871732 #328717

tetradic

#173287 #87176A #876C17 #178734

square

#173287 #87176A #876C17 #178734

split-complementary

#173287 #873417 #6A8717

monochromatic

#050B1E #0E1F53 #173287 #2045BB #3B62DE

Accessibility & contrast

On white

11.40

#173287 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173287 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173287

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173287	#FFFFFF	#000000	##FFFFFF
##173287	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8A

Deuteranopia (green-blind)

#003585

Tritanopia (blue-blind)

#004857

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173287;
/* rgb */ color: rgb(23, 50, 135);
/* oklch */ color: oklch(35.7% 0.146 265.6);

Tailwind

colors: {
  custom: {
    50: '#6969ab',
    500: '#173287',
    950: '#000000',
  },
}

SCSS

$custom: #173287;
$custom-light: #6969ab;
$custom-dark: #000000;

JSON

{
  "hex": "#173287",
  "rgb": {
    "r": 23,
    "g": 50,
    "b": 135
  },
  "hsl": {
    "h": 225.536,
    "s": 70.886,
    "l": 30.98
  },
  "oklch": {
    "l": 0.35684,
    "c": 0.14578,
    "h": 265.6
  },
  "luminance": 0.04213
}

Semantic roles & 50–950 ramp

primary

#173287

secondary

#BB9D3F

accent

#C23AEE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #173287

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

Preview Lab → · Contrast checker → · Palette generator →