#173978#173978

#173978 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.9% C 0.115 H 261.4°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#173978
RGB	rgb(23, 57, 120)
HSL	hsl(219, 68%, 28%)
HSV	hsv(219, 81%, 47%)
CMYK	cmyk(80.8%, 52.5%, 0%, 52.9%)
CIE-LAB	lab(25.15, 12.51, -39.53)
CIE-LCH	lch(25.15, 41.46, 287.56°)
OKLab	oklab(35.89% -0.0173 -0.1137)
OKLCH	oklch(35.89% 0.115 261.4)
XYZ	xyz(5.2054, 4.4639, 18.3529)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173978 #785617

analogous

#176978 #173978 #251778

triadic

#173978 #781739 #397817

tetradic

#173978 #781769 #785617 #177825

square

#173978 #781769 #785617 #177825

split-complementary

#173978 #782517 #697817

monochromatic

#050C1A #0D2145 #173978 #2151AB #326CD8

Accessibility & contrast

On white

11.09

#173978 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#173978 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173978

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173978	#FFFFFF	#000000	##FFFFFF
##173978	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12407A

Deuteranopia (green-blind)

#003777

Tritanopia (blue-blind)

#004852

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173978;
/* rgb */ color: rgb(23, 57, 120);
/* oklch */ color: oklch(35.9% 0.115 261.4);

Tailwind

colors: {
  custom: {
    50: '#656e9f',
    500: '#173978',
    950: '#000000',
  },
}

SCSS

$custom: #173978;
$custom-light: #656e9f;
$custom-dark: #000000;

JSON

{
  "hex": "#173978",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 120
  },
  "hsl": {
    "h": 218.969,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35892,
    "c": 0.11505,
    "h": 261.4
  },
  "luminance": 0.04464
}

Semantic roles & 50–950 ramp

primary

#173978

secondary

#AD863E

accent

#AE3DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173978

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

Preview Lab → · Contrast checker → · Palette generator →