#173C50#173C50

#173C50 is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.9% C 0.055 H 235.3°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#173C50
RGB	rgb(23, 60, 80)
HSL	hsl(201, 55%, 20%)
HSV	hsv(201, 71%, 31%)
CMYK	cmyk(71.2%, 25%, 0%, 68.6%)
CIE-LAB	lab(23.65, -5.88, -16.03)
CIE-LCH	lch(23.65, 17.07, 249.86°)
OKLab	oklab(33.92% -0.0312 -0.045)
OKLCH	oklch(33.92% 0.055 235.3)
XYZ	xyz(3.4166, 3.9927, 8.1785)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C50 #502B17

analogous

#175048 #173C50 #171F50

triadic

#173C50 #50173C #3C5017

tetradic

#173C50 #481750 #502B17 #1F5017

square

#173C50 #481750 #502B17 #1F5017

split-complementary

#173C50 #50171F #504817

monochromatic

#071218 #091820 #173C50 #256080 #3283AF

Accessibility & contrast

On white

11.68

#173C50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#173C50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C50

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C50	#FFFFFF	#000000	##FFFFFF
##173C50	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323C51

Deuteranopia (green-blind)

#2B3650

Tritanopia (blue-blind)

#004143

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173c50;
/* rgb */ color: rgb(23, 60, 80);
/* oklch */ color: oklch(33.9% 0.055 235.3);

Tailwind

colors: {
  custom: {
    50: '#5b7181',
    500: '#173c50',
    950: '#000000',
  },
}

SCSS

$custom: #173c50;
$custom-light: #5b7181;
$custom-dark: #000000;

JSON

{
  "hex": "#173c50",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 80
  },
  "hsl": {
    "h": 201.053,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.33919,
    "c": 0.05471,
    "h": 235.3
  },
  "luminance": 0.03993
}

Semantic roles & 50–950 ramp

primary

#173C50

secondary

#87563C

accent

#7E49DF

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #173C50

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

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