#173478#173478

#173478 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.8% C 0.122 H 263.8°. Best body text is #FFFFFF at 11.67:1 contrast (WCAG AA passes).

Color values

HEX	#173478
RGB	rgb(23, 52, 120)
HSL	hsl(222, 68%, 28%)
HSV	hsv(222, 81%, 47%)
CMYK	cmyk(80.8%, 56.7%, 0%, 52.9%)
CIE-LAB	lab(23.65, 16.07, -41.96)
CIE-LCH	lch(23.65, 44.93, 290.96°)
OKLab	oklab(34.75% -0.0132 -0.121)
OKLCH	oklch(34.75% 0.122 263.8)
XYZ	xyz(4.9703, 3.9936, 18.2746)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173478 #785B17

analogous

#176478 #173478 #2A1778

triadic

#173478 #781734 #347817

tetradic

#173478 #781764 #785B17 #17782A

square

#173478 #781764 #785B17 #17782A

split-complementary

#173478 #782A17 #647817

monochromatic

#050B1A #0D1E45 #173478 #214AAB #3263D8

Accessibility & contrast

On white

11.67

#173478 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#173478 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173478

11.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173478	#FFFFFF	#000000	##FFFFFF
##173478	1.00	11.67	1.80	11.67
#FFFFFF	11.67	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7A

Deuteranopia (green-blind)

#003477

Tritanopia (blue-blind)

#004550

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173478;
/* rgb */ color: rgb(23, 52, 120);
/* oklch */ color: oklch(34.8% 0.122 263.8);

Tailwind

colors: {
  custom: {
    50: '#656aa0',
    500: '#173478',
    950: '#000000',
  },
}

SCSS

$custom: #173478;
$custom-light: #656aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#173478",
  "rgb": {
    "r": 23,
    "g": 52,
    "b": 120
  },
  "hsl": {
    "h": 222.062,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.34752,
    "c": 0.12171,
    "h": 263.8
  },
  "luminance": 0.03994
}

Semantic roles & 50–950 ramp

primary

#173478

secondary

#AD8C3E

accent

#B73DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060F

muted

#7A7A7E

Preview Lab

Preview with #173478

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

Preview Lab → · Contrast checker → · Palette generator →