#173F53#173F53

#173F53 is a dark, muted cyan. Relative luminance 0.044; OKLCH L 34.9% C 0.056 H 233.5°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#173F53
RGB	rgb(23, 63, 83)
HSL	hsl(200, 57%, 21%)
HSV	hsv(200, 72%, 33%)
CMYK	cmyk(72.3%, 24.1%, 0%, 67.5%)
CIE-LAB	lab(24.83, -6.67, -16.17)
CIE-LCH	lch(24.83, 17.49, 247.58°)
OKLab	oklab(34.91% -0.0336 -0.0453)
OKLCH	oklch(34.91% 0.056 233.5)
XYZ	xyz(3.6916, 4.3613, 8.8292)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F53 #532B17

analogous

#175349 #173F53 #172153

triadic

#173F53 #53173F #3F5317

tetradic

#173F53 #491753 #532B17 #215317

square

#173F53 #491753 #532B17 #215317

split-complementary

#173F53 #531721 #534917

monochromatic

#071218 #0A1B23 #173F53 #246383 #3288B3

Accessibility & contrast

On white

11.22

#173F53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173F53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F53

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F53	#FFFFFF	#000000	##FFFFFF
##173F53	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353E54

Deuteranopia (green-blind)

#2D3853

Tritanopia (blue-blind)

#004446

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173f53;
/* rgb */ color: rgb(23, 63, 83);
/* oklch */ color: oklch(34.9% 0.056 233.5);

Tailwind

colors: {
  custom: {
    50: '#5c7483',
    500: '#173f53',
    950: '#000000',
  },
}

SCSS

$custom: #173f53;
$custom-light: #5c7483;
$custom-dark: #000000;

JSON

{
  "hex": "#173f53",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 83
  },
  "hsl": {
    "h": 200,
    "s": 56.604,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34909,
    "c": 0.05644,
    "h": 233.5
  },
  "luminance": 0.04362
}

Semantic roles & 50–950 ramp

primary

#173F53

secondary

#8A563C

accent

#7B48E0

background

#F5F7F8

surface

#E9EDEF

border

#C5C8CA

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173F53

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

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