#173979#173979

#173979 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 36.0% C 0.117 H 261.6°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#173979
RGB	rgb(23, 57, 121)
HSL	hsl(219, 68%, 28%)
HSV	hsv(219, 81%, 47%)
CMYK	cmyk(81%, 52.9%, 0%, 52.5%)
CIE-LAB	lab(25.22, 12.93, -40.04)
CIE-LCH	lch(25.22, 42.08, 287.89°)
OKLab	oklab(35.97% -0.0171 -0.1152)
OKLCH	oklch(35.97% 0.117 261.6)
XYZ	xyz(5.2664, 4.4883, 18.6742)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173979 #795717

analogous

#176A79 #173979 #261779

triadic

#173979 #791739 #397917

tetradic

#173979 #79176A #795717 #177926

square

#173979 #79176A #795717 #177926

split-complementary

#173979 #792617 #6A7917

monochromatic

#050C1A #0D2146 #173979 #2151AC #326CD8

Accessibility & contrast

On white

11.07

#173979 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#173979 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173979

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173979	#FFFFFF	#000000	##FFFFFF
##173979	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10417B

Deuteranopia (green-blind)

#003878

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173979;
/* rgb */ color: rgb(23, 57, 121);
/* oklch */ color: oklch(36.0% 0.117 261.6);

Tailwind

colors: {
  custom: {
    50: '#656ea0',
    500: '#173979',
    950: '#000000',
  },
}

SCSS

$custom: #173979;
$custom-light: #656ea0;
$custom-dark: #000000;

JSON

{
  "hex": "#173979",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 121
  },
  "hsl": {
    "h": 219.184,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35973,
    "c": 0.11651,
    "h": 261.6
  },
  "luminance": 0.04489
}

Semantic roles & 50–950 ramp

primary

#173979

secondary

#AE873E

accent

#AF3DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #173979

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

Preview Lab → · Contrast checker → · Palette generator →