#178F9F#178F9F

#178F9F is a mid, moderate teal. Relative luminance 0.223; OKLCH L 59.7% C 0.099 H 209.3°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#178F9F
RGB	rgb(23, 143, 159)
HSL	hsl(187, 75%, 36%)
HSV	hsv(187, 86%, 62%)
CMYK	cmyk(85.5%, 10.1%, 0%, 37.6%)
CIE-LAB	lab(54.37, -24.80, -17.27)
CIE-LCH	lch(54.37, 30.22, 214.85°)
OKLab	oklab(59.7% -0.086 -0.0481)
OKLCH	oklch(59.7% 0.099 209.3)
XYZ	xyz(16.4310, 22.3282, 36.2379)
Luminance	0.2233 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178F9F #9F2717

analogous

#179F6B #178F9F #174B9F

triadic

#178F9F #9F178F #8F9F17

tetradic

#178F9F #6B179F #9F2717 #4B9F17

square

#178F9F #6B179F #9F2717 #4B9F17

split-complementary

#178F9F #9F174B #9F6B17

monochromatic

#082F34 #0F5F6A #178F9F #1FBFD4 #4BD3E5

Accessibility & contrast

On white

3.84

#178F9F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#178F9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178F9F

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178F9F	#FFFFFF	#000000	##000000
##178F9F	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8189A0

Deuteranopia (green-blind)

#707D9F

Tritanopia (blue-blind)

#009694

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #178f9f;
/* rgb */ color: rgb(23, 143, 159);
/* oklch */ color: oklch(59.7% 0.099 209.3);

Tailwind

colors: {
  custom: {
    50: '#71b0bb',
    500: '#178f9f',
    950: '#000000',
  },
}

SCSS

$custom: #178f9f;
$custom-light: #71b0bb;
$custom-dark: #000000;

JSON

{
  "hex": "#178f9f",
  "rgb": {
    "r": 23,
    "g": 143,
    "b": 159
  },
  "hsl": {
    "h": 187.059,
    "s": 74.725,
    "l": 35.686
  },
  "oklch": {
    "l": 0.59699,
    "c": 0.09852,
    "h": 209.3
  },
  "luminance": 0.2233
}

Semantic roles & 50–950 ramp

primary

#178F9F

secondary

#C75A4B

accent

#4C36F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178F9F

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

Preview Lab → · Contrast checker → · Palette generator →