#173F3F#173F3F

#173F3F is a dark, muted teal. Relative luminance 0.041; OKLCH L 34.0% C 0.045 H 195.3°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#173F3F
RGB	rgb(23, 63, 63)
HSL	hsl(180, 47%, 17%)
HSV	hsv(180, 63%, 25%)
CMYK	cmyk(63.5%, 0%, 0%, 75.3%)
CIE-LAB	lab(23.99, -13.85, -4.23)
CIE-LCH	lch(23.99, 14.48, 196.99°)
OKLab	oklab(33.95% -0.043 -0.0117)
OKLCH	oklch(33.95% 0.045 195.3)
XYZ	xyz(3.0277, 4.0958, 5.3327)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F3F #3F1717

analogous

#173F2B #173F3F #172B3F

triadic

#173F3F #3F173F #3F3F17

tetradic

#173F3F #2B173F #3F1717 #2B3F17

square

#173F3F #2B173F #3F1717 #2B3F17

split-complementary

#173F3F #3F172B #3F2B17

monochromatic

#081616 #081616 #173F3F #276C6C #389999

Accessibility & contrast

On white

11.54

#173F3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#173F3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F3F

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F3F	#FFFFFF	#000000	##FFFFFF
##173F3F	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3C3F

Deuteranopia (green-blind)

#34373F

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173f3f;
/* rgb */ color: rgb(23, 63, 63);
/* oklch */ color: oklch(34.0% 0.045 195.3);

Tailwind

colors: {
  custom: {
    50: '#597474',
    500: '#173f3f',
    950: '#000000',
  },
}

SCSS

$custom: #173f3f;
$custom-light: #597474;
$custom-dark: #000000;

JSON

{
  "hex": "#173f3f",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 180,
    "s": 46.512,
    "l": 16.863
  },
  "oklch": {
    "l": 0.3395,
    "c": 0.04456,
    "h": 195.3
  },
  "luminance": 0.04096
}

Semantic roles & 50–950 ramp

primary

#173F3F

secondary

#763C3C

accent

#5252D6

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040808

muted

#797B7B

Preview Lab

Preview with #173F3F

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

Preview Lab → · Contrast checker → · Palette generator →