#173778#173778

#173778 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.4% C 0.118 H 262.4°. Best body text is #FFFFFF at 11.33:1 contrast (WCAG AA passes).

Color values

HEX	#173778
RGB	rgb(23, 55, 120)
HSL	hsl(220, 68%, 28%)
HSV	hsv(220, 81%, 47%)
CMYK	cmyk(80.8%, 54.2%, 0%, 52.9%)
CIE-LAB	lab(24.54, 13.93, -40.51)
CIE-LCH	lch(24.54, 42.84, 288.98°)
OKLab	oklab(35.43% -0.0156 -0.1167)
OKLCH	oklch(35.43% 0.118 262.4)
XYZ	xyz(5.1085, 4.2700, 18.3206)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173778 #785817

analogous

#176778 #173778 #271778

triadic

#173778 #781737 #377817

tetradic

#173778 #781767 #785817 #177827

square

#173778 #781767 #785817 #177827

split-complementary

#173778 #782717 #677817

monochromatic

#050C1A #0D1F45 #173778 #214FAB #3268D8

Accessibility & contrast

On white

11.33

#173778 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173778 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173778

11.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173778	#FFFFFF	#000000	##FFFFFF
##173778	1.00	11.33	1.85	11.33
#FFFFFF	11.33	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A3F7A

Deuteranopia (green-blind)

#003677

Tritanopia (blue-blind)

#004752

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173778;
/* rgb */ color: rgb(23, 55, 120);
/* oklch */ color: oklch(35.4% 0.118 262.4);

Tailwind

colors: {
  custom: {
    50: '#656d9f',
    500: '#173778',
    950: '#000000',
  },
}

SCSS

$custom: #173778;
$custom-light: #656d9f;
$custom-dark: #000000;

JSON

{
  "hex": "#173778",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 120
  },
  "hsl": {
    "h": 220.206,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35431,
    "c": 0.1177,
    "h": 262.4
  },
  "luminance": 0.04271
}

Semantic roles & 50–950 ramp

primary

#173778

secondary

#AD883E

accent

#B13DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #173778

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

Preview Lab → · Contrast checker → · Palette generator →