#173F42#173F42

#173F42 is a dark, muted teal. Relative luminance 0.041; OKLCH L 34.1% C 0.045 H 202.0°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#173F42
RGB	rgb(23, 63, 66)
HSL	hsl(184, 48%, 17%)
HSV	hsv(184, 65%, 26%)
CMYK	cmyk(65.2%, 4.5%, 0%, 74.1%)
CIE-LAB	lab(24.10, -12.85, -6.06)
CIE-LCH	lch(24.10, 14.20, 205.26°)
OKLab	oklab(34.08% -0.0414 -0.0168)
OKLCH	oklch(34.08% 0.045 202)
XYZ	xyz(3.1138, 4.1302, 5.7863)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F42 #421A17

analogous

#174230 #173F42 #172A42

triadic

#173F42 #42173F #3F4217

tetradic

#173F42 #301742 #421A17 #2A4217

square

#173F42 #301742 #421A17 #2A4217

split-complementary

#173F42 #42172A #423017

monochromatic

#081617 #081617 #173F42 #276A6F #37969D

Accessibility & contrast

On white

11.50

#173F42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#173F42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F42

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F42	#FFFFFF	#000000	##FFFFFF
##173F42	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3C42

Deuteranopia (green-blind)

#333742

Tritanopia (blue-blind)

#004140

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173f42;
/* rgb */ color: rgb(23, 63, 66);
/* oklch */ color: oklch(34.1% 0.045 202.0);

Tailwind

colors: {
  custom: {
    50: '#5a7476',
    500: '#173f42',
    950: '#000000',
  },
}

SCSS

$custom: #173f42;
$custom-light: #5a7476;
$custom-dark: #000000;

JSON

{
  "hex": "#173f42",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 66
  },
  "hsl": {
    "h": 184.186,
    "s": 48.315,
    "l": 17.451
  },
  "oklch": {
    "l": 0.34078,
    "c": 0.04471,
    "h": 202
  },
  "luminance": 0.04131
}

Semantic roles & 50–950 ramp

primary

#173F42

secondary

#79403C

accent

#5950D8

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040808

muted

#797B7B

Preview Lab

Preview with #173F42

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

Preview Lab → · Contrast checker → · Palette generator →