#178A9F#178A9F

#178A9F is a mid, moderate teal. Relative luminance 0.209; OKLCH L 58.4% C 0.098 H 214.1°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#178A9F
RGB	rgb(23, 138, 159)
HSL	hsl(189, 75%, 36%)
HSV	hsv(189, 86%, 62%)
CMYK	cmyk(85.5%, 13.2%, 0%, 37.6%)
CIE-LAB	lab(52.80, -22.21, -19.67)
CIE-LCH	lch(52.80, 29.67, 221.53°)
OKLab	oklab(58.43% -0.0811 -0.055)
OKLCH	oklch(58.43% 0.098 214.1)
XYZ	xyz(15.6971, 20.8603, 35.9933)
Luminance	0.2086 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178A9F #9F2C17

analogous

#179F70 #178A9F #17469F

triadic

#178A9F #9F178A #8A9F17

tetradic

#178A9F #70179F #9F2C17 #469F17

square

#178A9F #70179F #9F2C17 #469F17

split-complementary

#178A9F #9F1746 #9F7017

monochromatic

#082D34 #0F5C6A #178A9F #1FB8D4 #4BCDE5

Accessibility & contrast

On white

4.06

#178A9F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#178A9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178A9F

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178A9F	#FFFFFF	#000000	##000000
##178A9F	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B85A0

Deuteranopia (green-blind)

#6A799F

Tritanopia (blue-blind)

#009291

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #178a9f;
/* rgb */ color: rgb(23, 138, 159);
/* oklch */ color: oklch(58.4% 0.098 214.1);

Tailwind

colors: {
  custom: {
    50: '#70acbb',
    500: '#178a9f',
    950: '#000000',
  },
}

SCSS

$custom: #178a9f;
$custom-light: #70acbb;
$custom-dark: #000000;

JSON

{
  "hex": "#178a9f",
  "rgb": {
    "r": 23,
    "g": 138,
    "b": 159
  },
  "hsl": {
    "h": 189.265,
    "s": 74.725,
    "l": 35.686
  },
  "oklch": {
    "l": 0.58425,
    "c": 0.09797,
    "h": 214.1
  },
  "luminance": 0.20862
}

Semantic roles & 50–950 ramp

primary

#178A9F

secondary

#C75E4B

accent

#5336F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178A9F

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

Preview Lab → · Contrast checker → · Palette generator →