#173A39#173A39

#173A39 is a dark, muted teal. Relative luminance 0.035; OKLCH L 32.2% C 0.040 H 192.8°. Best body text is #FFFFFF at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#173A39
RGB	rgb(23, 58, 57)
HSL	hsl(178, 43%, 16%)
HSV	hsv(178, 60%, 23%)
CMYK	cmyk(60.3%, 0%, 1.7%, 77.3%)
CIE-LAB	lab(21.96, -12.86, -3.24)
CIE-LCH	lch(21.96, 13.26, 194.12°)
OKLab	oklab(32.24% -0.0394 -0.009)
OKLCH	oklch(32.24% 0.04 192.8)
XYZ	xyz(2.6046, 3.5034, 4.4091)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A39 #3A1718

analogous

#173A27 #173A39 #17293A

triadic

#173A39 #39173A #3A3917

tetradic

#173A39 #27173A #3A1718 #293A17

square

#173A39 #27173A #3A1718 #293A17

split-complementary

#173A39 #3A1729 #3A2717

monochromatic

#091616 #091616 #173A39 #286664 #3A928F

Accessibility & contrast

On white

12.35

#173A39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#173A39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A39

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A39	#FFFFFF	#000000	##FFFFFF
##173A39	1.00	12.35	1.70	12.35
#FFFFFF	12.35	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363739

Deuteranopia (green-blind)

#313339

Tritanopia (blue-blind)

#013C3A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173a39;
/* rgb */ color: rgb(23, 58, 57);
/* oklch */ color: oklch(32.2% 0.040 192.8);

Tailwind

colors: {
  custom: {
    50: '#58706f',
    500: '#173a39',
    950: '#000000',
  },
}

SCSS

$custom: #173a39;
$custom-light: #58706f;
$custom-dark: #000000;

JSON

{
  "hex": "#173a39",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 57
  },
  "hsl": {
    "h": 178.286,
    "s": 43.21,
    "l": 15.882
  },
  "oklch": {
    "l": 0.32241,
    "c": 0.04043,
    "h": 192.8
  },
  "luminance": 0.03504
}

Semantic roles & 50–950 ramp

primary

#173A39

secondary

#713C3E

accent

#5558D3

background

#F5F6F6

surface

#E9ECEC

border

#C5C7C7

text

#030707

muted

#787A7A

Preview Lab

Preview with #173A39

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

Preview Lab → · Contrast checker → · Palette generator →