#173773#173773

#173773 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.0% C 0.110 H 261.5°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#173773
RGB	rgb(23, 55, 115)
HSL	hsl(219, 67%, 27%)
HSV	hsv(219, 80%, 45%)
CMYK	cmyk(80%, 52.2%, 0%, 54.9%)
CIE-LAB	lab(24.17, 11.85, -37.94)
CIE-LCH	lch(24.17, 39.75, 287.34°)
OKLab	oklab(35.02% -0.0162 -0.1091)
OKLCH	oklch(35.02% 0.11 261.5)
XYZ	xyz(4.8129, 4.1518, 16.7640)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173773 #735317

analogous

#176573 #173773 #251773

triadic

#173773 #731737 #377317

tetradic

#173773 #731765 #735317 #177325

square

#173773 #731765 #735317 #177325

split-complementary

#173773 #732517 #657317

monochromatic

#050C1A #0D1F40 #173773 #214FA6 #2F69D5

Accessibility & contrast

On white

11.47

#173773 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#173773 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173773

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173773	#FFFFFF	#000000	##FFFFFF
##173773	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133E75

Deuteranopia (green-blind)

#003572

Tritanopia (blue-blind)

#00454F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173773;
/* rgb */ color: rgb(23, 55, 115);
/* oklch */ color: oklch(35.0% 0.110 261.5);

Tailwind

colors: {
  custom: {
    50: '#636d9c',
    500: '#173773',
    950: '#000000',
  },
}

SCSS

$custom: #173773;
$custom-light: #636d9c;
$custom-dark: #000000;

JSON

{
  "hex": "#173773",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 115
  },
  "hsl": {
    "h": 219.13,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.35023,
    "c": 0.1103,
    "h": 261.5
  },
  "luminance": 0.04152
}

Semantic roles & 50–950 ramp

primary

#173773

secondary

#A9833D

accent

#AE3EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173773

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

Preview Lab → · Contrast checker → · Palette generator →