#178C99#178C99

#178C99 is a mid, moderate teal. Relative luminance 0.212; OKLCH L 58.7% C 0.096 H 206.9°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#178C99
RGB	rgb(23, 140, 153)
HSL	hsl(186, 74%, 35%)
HSV	hsv(186, 85%, 60%)
CMYK	cmyk(85%, 8.5%, 0%, 40%)
CIE-LAB	lab(53.21, -25.26, -15.58)
CIE-LCH	lch(53.21, 29.68, 211.66°)
OKLab	oklab(58.68% -0.0856 -0.0434)
OKLCH	oklch(58.68% 0.096 206.9)
XYZ	xyz(15.4786, 21.2362, 33.4140)
Luminance	0.2124 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178C99 #992417

analogous

#179965 #178C99 #174B99

triadic

#178C99 #99178C #8C9917

tetradic

#178C99 #651799 #992417 #4B9917

square

#178C99 #651799 #992417 #4B9917

split-complementary

#178C99 #99174B #996517

monochromatic

#072B2F #0F5B64 #178C99 #1FBDCE #47D4E3

Accessibility & contrast

On white

4.00

#178C99 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#178C99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178C99

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178C99	#FFFFFF	#000000	##000000
##178C99	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F869A

Deuteranopia (green-blind)

#6E7A99

Tritanopia (blue-blind)

#009390

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #178c99;
/* rgb */ color: rgb(23, 140, 153);
/* oklch */ color: oklch(58.7% 0.096 206.9);

Tailwind

colors: {
  custom: {
    50: '#6faeb7',
    500: '#178c99',
    950: '#000000',
  },
}

SCSS

$custom: #178c99;
$custom-light: #6faeb7;
$custom-dark: #000000;

JSON

{
  "hex": "#178c99",
  "rgb": {
    "r": 23,
    "g": 140,
    "b": 153
  },
  "hsl": {
    "h": 186,
    "s": 73.864,
    "l": 34.51
  },
  "oklch": {
    "l": 0.58684,
    "c": 0.096,
    "h": 206.9
  },
  "luminance": 0.21238
}

Semantic roles & 50–950 ramp

primary

#178C99

secondary

#C55447

accent

#4A37F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178C99

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

Preview Lab → · Contrast checker → · Palette generator →