#173F50#173F50

#173F50 is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.7% C 0.053 H 229.1°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#173F50
RGB	rgb(23, 63, 80)
HSL	hsl(198, 55%, 20%)
HSV	hsv(198, 71%, 31%)
CMYK	cmyk(71.2%, 21.2%, 0%, 68.6%)
CIE-LAB	lab(24.69, -7.81, -14.42)
CIE-LCH	lch(24.69, 16.39, 241.55°)
OKLab	oklab(34.75% -0.0349 -0.0403)
OKLCH	oklch(34.75% 0.053 229.1)
XYZ	xyz(3.5783, 4.3160, 8.2324)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F50 #502817

analogous

#175045 #173F50 #172250

triadic

#173F50 #50173F #3F5017

tetradic

#173F50 #451750 #502817 #225017

square

#173F50 #451750 #502817 #225017

split-complementary

#173F50 #501722 #504517

monochromatic

#071318 #091A20 #173F50 #256480 #328AAF

Accessibility & contrast

On white

11.27

#173F50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173F50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F50

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F50	#FFFFFF	#000000	##FFFFFF
##173F50	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363E51

Deuteranopia (green-blind)

#2E3850

Tritanopia (blue-blind)

#004445

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173f50;
/* rgb */ color: rgb(23, 63, 80);
/* oklch */ color: oklch(34.7% 0.053 229.1);

Tailwind

colors: {
  custom: {
    50: '#5c7481',
    500: '#173f50',
    950: '#000000',
  },
}

SCSS

$custom: #173f50;
$custom-light: #5c7481;
$custom-dark: #000000;

JSON

{
  "hex": "#173f50",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 80
  },
  "hsl": {
    "h": 197.895,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34749,
    "c": 0.05331,
    "h": 229.1
  },
  "luminance": 0.04316
}

Semantic roles & 50–950 ramp

primary

#173F50

secondary

#87523C

accent

#7649DF

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173F50

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

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