#173786#173786

#173786 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.6% C 0.138 H 264.0°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#173786
RGB	rgb(23, 55, 134)
HSL	hsl(223, 71%, 31%)
HSV	hsv(223, 83%, 53%)
CMYK	cmyk(82.8%, 59%, 0%, 47.5%)
CIE-LAB	lab(25.67, 19.71, -47.49)
CIE-LCH	lch(25.67, 51.42, 292.54°)
OKLab	oklab(36.64% -0.0143 -0.1372)
OKLCH	oklch(36.64% 0.138 264)
XYZ	xyz(6.0211, 4.6350, 23.1270)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173786 #866617

analogous

#176E86 #173786 #2E1786

triadic

#173786 #861737 #378617

tetradic

#173786 #86176E #866617 #17862E

square

#173786 #86176E #866617 #17862E

split-complementary

#173786 #862E17 #6E8617

monochromatic

#050C1E #0E2252 #173786 #204CBA #3A69DD

Accessibility & contrast

On white

10.90

#173786 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#173786 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173786

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173786	#FFFFFF	#000000	##FFFFFF
##173786	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004289

Deuteranopia (green-blind)

#003884

Tritanopia (blue-blind)

#004B59

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173786;
/* rgb */ color: rgb(23, 55, 134);
/* oklch */ color: oklch(36.6% 0.138 264.0);

Tailwind

colors: {
  custom: {
    50: '#686daa',
    500: '#173786',
    950: '#000000',
  },
}

SCSS

$custom: #173786;
$custom-light: #686daa;
$custom-dark: #000000;

JSON

{
  "hex": "#173786",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 134
  },
  "hsl": {
    "h": 222.703,
    "s": 70.701,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36636,
    "c": 0.13793,
    "h": 264
  },
  "luminance": 0.04636
}

Semantic roles & 50–950 ramp

primary

#173786

secondary

#BA963F

accent

#BA3AED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #173786

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

Preview Lab → · Contrast checker → · Palette generator →