#173873#173873

#173873 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.3% C 0.109 H 261.0°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#173873
RGB	rgb(23, 56, 115)
HSL	hsl(218, 67%, 27%)
HSV	hsv(218, 80%, 45%)
CMYK	cmyk(80%, 51.3%, 0%, 54.9%)
CIE-LAB	lab(24.47, 11.14, -37.44)
CIE-LCH	lch(24.47, 39.07, 286.56°)
OKLab	oklab(35.26% -0.0171 -0.1076)
OKLCH	oklch(35.26% 0.109 261)
XYZ	xyz(4.8609, 4.2478, 16.7800)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173873 #735217

analogous

#176673 #173873 #241773

triadic

#173873 #731738 #387317

tetradic

#173873 #731766 #735217 #177324

square

#173873 #731766 #735217 #177324

split-complementary

#173873 #732417 #667317

monochromatic

#050C1A #0D1F40 #173873 #2151A6 #2F6BD5

Accessibility & contrast

On white

11.35

#173873 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173873 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173873

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173873	#FFFFFF	#000000	##FFFFFF
##173873	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#163F75

Deuteranopia (green-blind)

#003672

Tritanopia (blue-blind)

#004650

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173873;
/* rgb */ color: rgb(23, 56, 115);
/* oklch */ color: oklch(35.3% 0.109 261.0);

Tailwind

colors: {
  custom: {
    50: '#636e9c',
    500: '#173873',
    950: '#000000',
  },
}

SCSS

$custom: #173873;
$custom-light: #636e9c;
$custom-dark: #000000;

JSON

{
  "hex": "#173873",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 115
  },
  "hsl": {
    "h": 218.478,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.35258,
    "c": 0.10898,
    "h": 261
  },
  "luminance": 0.04248
}

Semantic roles & 50–950 ramp

primary

#173873

secondary

#A9823D

accent

#AC3EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173873

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

Preview Lab → · Contrast checker → · Palette generator →