#173F52#173F52

#173F52 is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.055 H 232.1°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#173F52
RGB	rgb(23, 63, 82)
HSL	hsl(199, 56%, 21%)
HSV	hsv(199, 72%, 32%)
CMYK	cmyk(72%, 23.2%, 0%, 67.8%)
CIE-LAB	lab(24.78, -7.05, -15.58)
CIE-LCH	lch(24.78, 17.11, 245.65°)
OKLab	oklab(34.86% -0.034 -0.0437)
OKLCH	oklch(34.86% 0.055 232.1)
XYZ	xyz(3.6532, 4.3460, 8.6273)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F52 #522A17

analogous

#175247 #173F52 #172152

triadic

#173F52 #52173F #3F5217

tetradic

#173F52 #471752 #522A17 #215217

square

#173F52 #471752 #522A17 #215217

split-complementary

#173F52 #521721 #524717

monochromatic

#071218 #0A1A22 #173F52 #246482 #3288B2

Accessibility & contrast

On white

11.23

#173F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F52

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F52	#FFFFFF	#000000	##FFFFFF
##173F52	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363E53

Deuteranopia (green-blind)

#2D3852

Tritanopia (blue-blind)

#004445

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173f52;
/* rgb */ color: rgb(23, 63, 82);
/* oklch */ color: oklch(34.9% 0.055 232.1);

Tailwind

colors: {
  custom: {
    50: '#5c7482',
    500: '#173f52',
    950: '#000000',
  },
}

SCSS

$custom: #173f52;
$custom-light: #5c7482;
$custom-dark: #000000;

JSON

{
  "hex": "#173f52",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 82
  },
  "hsl": {
    "h": 199.322,
    "s": 56.19,
    "l": 20.588
  },
  "oklch": {
    "l": 0.34855,
    "c": 0.05536,
    "h": 232.1
  },
  "luminance": 0.04346
}

Semantic roles & 50–950 ramp

primary

#173F52

secondary

#89553C

accent

#7948DF

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173F52

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

Preview Lab → · Contrast checker → · Palette generator →