#173A40#173A40

#173A40 is a dark, muted teal. Relative luminance 0.036; OKLCH L 32.5% C 0.041 H 210.2°. Best body text is #FFFFFF at 12.24:1 contrast (WCAG AA passes).

Color values

HEX	#173A40
RGB	rgb(23, 58, 64)
HSL	hsl(189, 47%, 17%)
HSV	hsv(189, 64%, 25%)
CMYK	cmyk(64.1%, 9.4%, 0%, 74.9%)
CIE-LAB	lab(22.22, -10.50, -7.54)
CIE-LCH	lch(22.22, 12.93, 215.70°)
OKLab	oklab(32.55% -0.0358 -0.0209)
OKLCH	oklch(32.55% 0.041 210.2)
XYZ	xyz(2.7914, 3.5782, 5.3930)
Luminance	0.0358 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A40 #401D17

analogous

#174032 #173A40 #172640

triadic

#173A40 #40173A #3A4017

tetradic

#173A40 #321740 #401D17 #264017

square

#173A40 #321740 #401D17 #264017

split-complementary

#173A40 #401726 #403217

monochromatic

#081417 #081417 #173A40 #27636D #378C9A

Accessibility & contrast

On white

12.24

#173A40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#173A40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A40

12.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A40	#FFFFFF	#000000	##FFFFFF
##173A40	1.00	12.24	1.72	12.24
#FFFFFF	12.24	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353840

Deuteranopia (green-blind)

#2F3340

Tritanopia (blue-blind)

#003D3C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173a40;
/* rgb */ color: rgb(23, 58, 64);
/* oklch */ color: oklch(32.5% 0.041 210.2);

Tailwind

colors: {
  custom: {
    50: '#597074',
    500: '#173a40',
    950: '#000000',
  },
}

SCSS

$custom: #173a40;
$custom-light: #597074;
$custom-dark: #000000;

JSON

{
  "hex": "#173a40",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 64
  },
  "hsl": {
    "h": 188.78,
    "s": 47.126,
    "l": 17.059
  },
  "oklch": {
    "l": 0.32545,
    "c": 0.04147,
    "h": 210.2
  },
  "luminance": 0.03578
}

Semantic roles & 50–950 ramp

primary

#173A40

secondary

#77453C

accent

#6551D7

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #173A40

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

Preview Lab → · Contrast checker → · Palette generator →