#173E50#173E50

#173E50 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.054 H 231.2°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#173E50
RGB	rgb(23, 62, 80)
HSL	hsl(199, 55%, 20%)
HSV	hsv(199, 71%, 31%)
CMYK	cmyk(71.2%, 22.5%, 0%, 68.6%)
CIE-LAB	lab(24.34, -7.17, -14.95)
CIE-LCH	lch(24.34, 16.58, 244.38°)
OKLab	oklab(34.47% -0.0336 -0.0419)
OKLCH	oklch(34.47% 0.054 231.2)
XYZ	xyz(3.5234, 4.2062, 8.2141)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E50 #502917

analogous

#175045 #173E50 #172250

triadic

#173E50 #50173E #3E5017

tetradic

#173E50 #451750 #502917 #225017

square

#173E50 #451750 #502917 #225017

split-complementary

#173E50 #501722 #504517

monochromatic

#071218 #091920 #173E50 #256380 #3288AF

Accessibility & contrast

On white

11.40

#173E50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173E50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E50

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E50	#FFFFFF	#000000	##FFFFFF
##173E50	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353D51

Deuteranopia (green-blind)

#2D3750

Tritanopia (blue-blind)

#004344

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173e50;
/* rgb */ color: rgb(23, 62, 80);
/* oklch */ color: oklch(34.5% 0.054 231.2);

Tailwind

colors: {
  custom: {
    50: '#5c7381',
    500: '#173e50',
    950: '#000000',
  },
}

SCSS

$custom: #173e50;
$custom-light: #5c7381;
$custom-dark: #000000;

JSON

{
  "hex": "#173e50",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 80
  },
  "hsl": {
    "h": 198.947,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34472,
    "c": 0.0537,
    "h": 231.2
  },
  "luminance": 0.04207
}

Semantic roles & 50–950 ramp

primary

#173E50

secondary

#87533C

accent

#7849DF

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173E50

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

Preview Lab → · Contrast checker → · Palette generator →