#178B99#178B99

#178B99 is a mid, moderate teal. Relative luminance 0.209; OKLCH L 58.4% C 0.096 H 207.9°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#178B99
RGB	rgb(23, 139, 153)
HSL	hsl(186, 74%, 35%)
HSV	hsv(186, 85%, 60%)
CMYK	cmyk(85%, 9.2%, 0%, 40%)
CIE-LAB	lab(52.89, -24.75, -16.06)
CIE-LCH	lch(52.89, 29.51, 212.98°)
OKLab	oklab(58.43% -0.0846 -0.0447)
OKLCH	oklch(58.43% 0.096 207.9)
XYZ	xyz(15.3332, 20.9453, 33.3655)
Luminance	0.2095 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178B99 #992517

analogous

#179966 #178B99 #174A99

triadic

#178B99 #99178B #8B9917

tetradic

#178B99 #661799 #992517 #4A9917

square

#178B99 #661799 #992517 #4A9917

split-complementary

#178B99 #99174A #996617

monochromatic

#072A2F #0F5B64 #178B99 #1FBBCE #47D3E3

Accessibility & contrast

On white

4.05

#178B99 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#178B99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178B99

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178B99	#FFFFFF	#000000	##000000
##178B99	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E859A

Deuteranopia (green-blind)

#6D7999

Tritanopia (blue-blind)

#00928F

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #178b99;
/* rgb */ color: rgb(23, 139, 153);
/* oklch */ color: oklch(58.4% 0.096 207.9);

Tailwind

colors: {
  custom: {
    50: '#6fadb7',
    500: '#178b99',
    950: '#000000',
  },
}

SCSS

$custom: #178b99;
$custom-light: #6fadb7;
$custom-dark: #000000;

JSON

{
  "hex": "#178b99",
  "rgb": {
    "r": 23,
    "g": 139,
    "b": 153
  },
  "hsl": {
    "h": 186.462,
    "s": 73.864,
    "l": 34.51
  },
  "oklch": {
    "l": 0.58427,
    "c": 0.09575,
    "h": 207.9
  },
  "luminance": 0.20947
}

Semantic roles & 50–950 ramp

primary

#178B99

secondary

#C55547

accent

#4B37F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178B99

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

Preview Lab → · Contrast checker → · Palette generator →