#173878#173878

#173878 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.7% C 0.116 H 261.9°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#173878
RGB	rgb(23, 56, 120)
HSL	hsl(220, 68%, 28%)
HSV	hsv(220, 81%, 47%)
CMYK	cmyk(80.8%, 53.3%, 0%, 52.9%)
CIE-LAB	lab(24.85, 13.22, -40.02)
CIE-LCH	lch(24.85, 42.15, 288.28°)
OKLab	oklab(35.66% -0.0164 -0.1152)
OKLCH	oklch(35.66% 0.116 261.9)
XYZ	xyz(5.1565, 4.3660, 18.3366)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173878 #785717

analogous

#176878 #173878 #271778

triadic

#173878 #781738 #387817

tetradic

#173878 #781768 #785717 #177827

square

#173878 #781768 #785717 #177827

split-complementary

#173878 #782717 #687817

monochromatic

#050C1A #0D2045 #173878 #2150AB #326AD8

Accessibility & contrast

On white

11.21

#173878 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173878 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173878

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173878	#FFFFFF	#000000	##FFFFFF
##173878	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E407A

Deuteranopia (green-blind)

#003777

Tritanopia (blue-blind)

#004752

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173878;
/* rgb */ color: rgb(23, 56, 120);
/* oklch */ color: oklch(35.7% 0.116 261.9);

Tailwind

colors: {
  custom: {
    50: '#656e9f',
    500: '#173878',
    950: '#000000',
  },
}

SCSS

$custom: #173878;
$custom-light: #656e9f;
$custom-dark: #000000;

JSON

{
  "hex": "#173878",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 120
  },
  "hsl": {
    "h": 219.588,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35661,
    "c": 0.11637,
    "h": 261.9
  },
  "luminance": 0.04367
}

Semantic roles & 50–950 ramp

primary

#173878

secondary

#AD873E

accent

#B03DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173878

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

Preview Lab → · Contrast checker → · Palette generator →