#173877#173877

#173877 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.6% C 0.115 H 261.7°. Best body text is #FFFFFF at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#173877
RGB	rgb(23, 56, 119)
HSL	hsl(219, 68%, 28%)
HSV	hsv(219, 81%, 47%)
CMYK	cmyk(80.7%, 52.9%, 0%, 53.3%)
CIE-LAB	lab(24.77, 12.80, -39.51)
CIE-LCH	lch(24.77, 41.53, 287.96°)
OKLab	oklab(35.58% -0.0165 -0.1137)
OKLCH	oklch(35.58% 0.115 261.7)
XYZ	xyz(5.0961, 4.3418, 18.0187)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173877 #775617

analogous

#176877 #173877 #261777

triadic

#173877 #771738 #387717

tetradic

#173877 #771768 #775617 #177726

square

#173877 #771768 #775617 #177726

split-complementary

#173877 #772617 #687717

monochromatic

#050C1A #0D2044 #173877 #2150AA #316AD7

Accessibility & contrast

On white

11.24

#173877 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173877 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173877

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173877	#FFFFFF	#000000	##FFFFFF
##173877	1.00	11.24	1.87	11.24
#FFFFFF	11.24	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#103F79

Deuteranopia (green-blind)

#003776

Tritanopia (blue-blind)

#004752

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173877;
/* rgb */ color: rgb(23, 56, 119);
/* oklch */ color: oklch(35.6% 0.115 261.7);

Tailwind

colors: {
  custom: {
    50: '#646e9f',
    500: '#173877',
    950: '#000000',
  },
}

SCSS

$custom: #173877;
$custom-light: #646e9f;
$custom-dark: #000000;

JSON

{
  "hex": "#173877",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 119
  },
  "hsl": {
    "h": 219.375,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35579,
    "c": 0.1149,
    "h": 261.7
  },
  "luminance": 0.04342
}

Semantic roles & 50–950 ramp

primary

#173877

secondary

#AC863E

accent

#AF3DEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173877

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

Preview Lab → · Contrast checker → · Palette generator →