#173F3B#173F3B

#173F3B is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.8% C 0.045 H 186.4°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#173F3B
RGB	rgb(23, 63, 59)
HSL	hsl(174, 47%, 17%)
HSV	hsv(174, 63%, 25%)
CMYK	cmyk(63.5%, 0%, 6.3%, 75.3%)
CIE-LAB	lab(23.84, -15.15, -1.78)
CIE-LCH	lch(23.84, 15.25, 186.71°)
OKLab	oklab(33.79% -0.0451 -0.005)
OKLCH	oklch(33.79% 0.045 186.4)
XYZ	xyz(2.9199, 4.0527, 4.7652)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F3B #3F171B

analogous

#173F27 #173F3B #172F3F

triadic

#173F3B #3B173F #3F3B17

tetradic

#173F3B #27173F #3F171B #2F3F17

square

#173F3B #27173F #3F171B #2F3F17

split-complementary

#173F3B #3F172F #3F2717

monochromatic

#081615 #081615 #173F3B #276C65 #38998F

Accessibility & contrast

On white

11.60

#173F3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#173F3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F3B

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F3B	#FFFFFF	#000000	##FFFFFF
##173F3B	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3B3B

Deuteranopia (green-blind)

#35373B

Tritanopia (blue-blind)

#00403E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173f3b;
/* rgb */ color: rgb(23, 63, 59);
/* oklch */ color: oklch(33.8% 0.045 186.4);

Tailwind

colors: {
  custom: {
    50: '#597470',
    500: '#173f3b',
    950: '#000000',
  },
}

SCSS

$custom: #173f3b;
$custom-light: #597470;
$custom-dark: #000000;

JSON

{
  "hex": "#173f3b",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 59
  },
  "hsl": {
    "h": 174,
    "s": 46.512,
    "l": 16.863
  },
  "oklch": {
    "l": 0.3379,
    "c": 0.04538,
    "h": 186.4
  },
  "luminance": 0.04053
}

Semantic roles & 50–950 ramp

primary

#173F3B

secondary

#763C42

accent

#525FD6

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#040807

muted

#797B7A

Preview Lab

Preview with #173F3B

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

Preview Lab → · Contrast checker → · Palette generator →