#178B9F#178B9F

#178B9F is a mid, moderate teal. Relative luminance 0.212; OKLCH L 58.7% C 0.098 H 213.1°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#178B9F
RGB	rgb(23, 139, 159)
HSL	hsl(189, 75%, 36%)
HSV	hsv(189, 86%, 62%)
CMYK	cmyk(85.5%, 12.6%, 0%, 37.6%)
CIE-LAB	lab(53.11, -22.73, -19.19)
CIE-LCH	lch(53.11, 29.75, 220.17°)
OKLab	oklab(58.68% -0.0821 -0.0536)
OKLCH	oklch(58.68% 0.098 213.1)
XYZ	xyz(15.8412, 21.1486, 36.0413)
Luminance	0.2115 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178B9F #9F2B17

analogous

#179F6F #178B9F #17479F

triadic

#178B9F #9F178B #8B9F17

tetradic

#178B9F #6F179F #9F2B17 #479F17

square

#178B9F #6F179F #9F2B17 #479F17

split-complementary

#178B9F #9F1747 #9F6F17

monochromatic

#082E34 #0F5C6A #178B9F #1FBAD4 #4BCEE5

Accessibility & contrast

On white

4.02

#178B9F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#178B9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178B9F

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178B9F	#FFFFFF	#000000	##000000
##178B9F	1.00	4.02	5.23	5.23
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C86A0

Deuteranopia (green-blind)

#6B799F

Tritanopia (blue-blind)

#009391

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #178b9f;
/* rgb */ color: rgb(23, 139, 159);
/* oklch */ color: oklch(58.7% 0.098 213.1);

Tailwind

colors: {
  custom: {
    50: '#70adbb',
    500: '#178b9f',
    950: '#000000',
  },
}

SCSS

$custom: #178b9f;
$custom-light: #70adbb;
$custom-dark: #000000;

JSON

{
  "hex": "#178b9f",
  "rgb": {
    "r": 23,
    "g": 139,
    "b": 159
  },
  "hsl": {
    "h": 188.824,
    "s": 74.725,
    "l": 35.686
  },
  "oklch": {
    "l": 0.5868,
    "c": 0.09802,
    "h": 213.1
  },
  "luminance": 0.21151
}

Semantic roles & 50–950 ramp

primary

#178B9F

secondary

#C75D4B

accent

#5236F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178B9F

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

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