#173879#173879

#173879 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.7% C 0.118 H 262.1°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#173879
RGB	rgb(23, 56, 121)
HSL	hsl(220, 68%, 28%)
HSV	hsv(220, 81%, 47%)
CMYK	cmyk(81%, 53.7%, 0%, 52.5%)
CIE-LAB	lab(24.92, 13.64, -40.53)
CIE-LCH	lch(24.92, 42.76, 288.59°)
OKLab	oklab(35.74% -0.0163 -0.1167)
OKLCH	oklch(35.74% 0.118 262.1)
XYZ	xyz(5.2175, 4.3904, 18.6579)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173879 #795817

analogous

#176979 #173879 #271779

triadic

#173879 #791738 #387917

tetradic

#173879 #791769 #795817 #177927

square

#173879 #791769 #795817 #177927

split-complementary

#173879 #792717 #697917

monochromatic

#050C1A #0D2046 #173879 #2150AC #326AD8

Accessibility & contrast

On white

11.18

#173879 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#173879 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173879

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173879	#FFFFFF	#000000	##FFFFFF
##173879	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C407B

Deuteranopia (green-blind)

#003778

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173879;
/* rgb */ color: rgb(23, 56, 121);
/* oklch */ color: oklch(35.7% 0.118 262.1);

Tailwind

colors: {
  custom: {
    50: '#656ea0',
    500: '#173879',
    950: '#000000',
  },
}

SCSS

$custom: #173879;
$custom-light: #656ea0;
$custom-dark: #000000;

JSON

{
  "hex": "#173879",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 121
  },
  "hsl": {
    "h": 219.796,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35743,
    "c": 0.11784,
    "h": 262.1
  },
  "luminance": 0.04391
}

Semantic roles & 50–950 ramp

primary

#173879

secondary

#AE883E

accent

#B03DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #173879

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

Preview Lab → · Contrast checker → · Palette generator →