#173369#173369

#173369 is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.3% C 0.101 H 261.9°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#173369
RGB	rgb(23, 51, 105)
HSL	hsl(220, 64%, 25%)
HSV	hsv(220, 78%, 41%)
CMYK	cmyk(78.1%, 51.4%, 0%, 58.8%)
CIE-LAB	lab(22.19, 10.53, -34.70)
CIE-LCH	lch(22.19, 36.26, 286.88°)
OKLab	oklab(33.28% -0.0142 -0.0996)
OKLCH	oklch(33.28% 0.101 261.9)
XYZ	xyz(4.0861, 3.5693, 13.8355)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173369 #694D17

analogous

#175C69 #173369 #241769

triadic

#173369 #691733 #336917

tetradic

#173369 #69175C #694D17 #176924

square

#173369 #69175C #694D17 #176924

split-complementary

#173369 #692417 #5C6917

monochromatic

#050C19 #0C1B37 #173369 #224B9B #2D64CD

Accessibility & contrast

On white

12.25

#173369 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#173369 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173369

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173369	#FFFFFF	#000000	##FFFFFF
##173369	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14396B

Deuteranopia (green-blind)

#003268

Tritanopia (blue-blind)

#004049

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173369;
/* rgb */ color: rgb(23, 51, 105);
/* oklch */ color: oklch(33.3% 0.101 261.9);

Tailwind

colors: {
  custom: {
    50: '#616a94',
    500: '#173369',
    950: '#000000',
  },
}

SCSS

$custom: #173369;
$custom-light: #616a94;
$custom-dark: #000000;

JSON

{
  "hex": "#173369",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 105
  },
  "hsl": {
    "h": 219.512,
    "s": 64.063,
    "l": 25.098
  },
  "oklch": {
    "l": 0.33277,
    "c": 0.10064,
    "h": 261.9
  },
  "luminance": 0.0357
}

Semantic roles & 50–950 ramp

primary

#173369

secondary

#9F7E3D

accent

#AE41E7

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #173369

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

Preview Lab → · Contrast checker → · Palette generator →