#173385#173385

#173385 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.7% C 0.142 H 265.3°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#173385
RGB	rgb(23, 51, 133)
HSL	hsl(225, 71%, 31%)
HSV	hsv(225, 83%, 52%)
CMYK	cmyk(82.7%, 61.7%, 0%, 47.8%)
CIE-LAB	lab(24.46, 22.11, -48.84)
CIE-LCH	lch(24.46, 53.61, 294.36°)
OKLab	oklab(35.7% -0.0117 -0.1412)
OKLCH	oklch(35.7% 0.142 265.3)
XYZ	xyz(5.7693, 4.2426, 22.7006)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173385 #856917

analogous

#176A85 #173385 #321785

triadic

#173385 #851733 #338517

tetradic

#173385 #85176A #856917 #178532

square

#173385 #85176A #856917 #178532

split-complementary

#173385 #853217 #6A8517

monochromatic

#050B1D #0E1F51 #173385 #2047B9 #3A63DD

Accessibility & contrast

On white

11.36

#173385 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173385 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173385

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173385	#FFFFFF	#000000	##FFFFFF
##173385	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F88

Deuteranopia (green-blind)

#003583

Tritanopia (blue-blind)

#004857

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173385;
/* rgb */ color: rgb(23, 51, 133);
/* oklch */ color: oklch(35.7% 0.142 265.3);

Tailwind

colors: {
  custom: {
    50: '#686aa9',
    500: '#173385',
    950: '#000000',
  },
}

SCSS

$custom: #173385;
$custom-light: #686aa9;
$custom-dark: #000000;

JSON

{
  "hex": "#173385",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 133
  },
  "hsl": {
    "h": 224.727,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.35702,
    "c": 0.1417,
    "h": 265.3
  },
  "luminance": 0.04243
}

Semantic roles & 50–950 ramp

primary

#173385

secondary

#B99A3F

accent

#C03BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #173385

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

Preview Lab → · Contrast checker → · Palette generator →