#173B39#173B39

#173B39 is a dark, muted teal. Relative luminance 0.036; OKLCH L 32.5% C 0.041 H 190.4°. Best body text is #FFFFFF at 12.20:1 contrast (WCAG AA passes).

Color values

HEX	#173B39
RGB	rgb(23, 59, 57)
HSL	hsl(177, 44%, 16%)
HSV	hsv(177, 61%, 23%)
CMYK	cmyk(61%, 0%, 3.4%, 76.9%)
CIE-LAB	lab(22.32, -13.46, -2.70)
CIE-LCH	lch(22.32, 13.72, 191.33°)
OKLab	oklab(32.53% -0.0408 -0.0075)
OKLCH	oklch(32.53% 0.041 190.4)
XYZ	xyz(2.6555, 3.6052, 4.4260)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B39 #3B1719

analogous

#173B27 #173B39 #172B3B

triadic

#173B39 #39173B #3B3917

tetradic

#173B39 #27173B #3B1719 #2B3B17

square

#173B39 #27173B #3B1719 #2B3B17

split-complementary

#173B39 #3B172B #3B2717

monochromatic

#091615 #091615 #173B39 #286764 #39938E

Accessibility & contrast

On white

12.20

#173B39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#173B39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B39

12.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B39	#FFFFFF	#000000	##FFFFFF
##173B39	1.00	12.20	1.72	12.20
#FFFFFF	12.20	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383839

Deuteranopia (green-blind)

#323439

Tritanopia (blue-blind)

#003D3A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173b39;
/* rgb */ color: rgb(23, 59, 57);
/* oklch */ color: oklch(32.5% 0.041 190.4);

Tailwind

colors: {
  custom: {
    50: '#58716f',
    500: '#173b39',
    950: '#000000',
  },
}

SCSS

$custom: #173b39;
$custom-light: #58716f;
$custom-dark: #000000;

JSON

{
  "hex": "#173b39",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 57
  },
  "hsl": {
    "h": 176.667,
    "s": 43.902,
    "l": 16.078
  },
  "oklch": {
    "l": 0.32535,
    "c": 0.04148,
    "h": 190.4
  },
  "luminance": 0.03605
}

Semantic roles & 50–950 ramp

primary

#173B39

secondary

#723C3F

accent

#545BD4

background

#F5F6F6

surface

#E9ECEC

border

#C5C7C7

text

#030707

muted

#787A7A

Preview Lab

Preview with #173B39

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

Preview Lab → · Contrast checker → · Palette generator →