#173785#173785

#173785 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.5% C 0.137 H 263.9°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#173785
RGB	rgb(23, 55, 133)
HSL	hsl(223, 71%, 31%)
HSV	hsv(223, 83%, 52%)
CMYK	cmyk(82.7%, 58.6%, 0%, 47.8%)
CIE-LAB	lab(25.59, 19.30, -47.00)
CIE-LCH	lch(25.59, 50.81, 292.33°)
OKLab	oklab(36.55% -0.0144 -0.1357)
OKLCH	oklch(36.55% 0.137 263.9)
XYZ	xyz(5.9517, 4.6073, 22.7614)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173785 #856517

analogous

#176E85 #173785 #2E1785

triadic

#173785 #851737 #378517

tetradic

#173785 #85176E #856517 #17852E

square

#173785 #85176E #856517 #17852E

split-complementary

#173785 #852E17 #6E8517

monochromatic

#050C1D #0E2151 #173785 #204DB9 #3A69DD

Accessibility & contrast

On white

10.93

#173785 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#173785 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173785

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173785	#FFFFFF	#000000	##FFFFFF
##173785	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004288

Deuteranopia (green-blind)

#003883

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173785;
/* rgb */ color: rgb(23, 55, 133);
/* oklch */ color: oklch(36.5% 0.137 263.9);

Tailwind

colors: {
  custom: {
    50: '#686da9',
    500: '#173785',
    950: '#000000',
  },
}

SCSS

$custom: #173785;
$custom-light: #686da9;
$custom-dark: #000000;

JSON

{
  "hex": "#173785",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 133
  },
  "hsl": {
    "h": 222.545,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.36547,
    "c": 0.13651,
    "h": 263.9
  },
  "luminance": 0.04608
}

Semantic roles & 50–950 ramp

primary

#173785

secondary

#B9953F

accent

#B93BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #173785

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

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