#178F9E#178F9E

#178F9E is a mid, moderate teal. Relative luminance 0.223; OKLCH L 59.7% C 0.098 H 208.4°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#178F9E
RGB	rgb(23, 143, 158)
HSL	hsl(187, 75%, 35%)
HSV	hsv(187, 85%, 62%)
CMYK	cmyk(85.4%, 9.5%, 0%, 38%)
CIE-LAB	lab(54.34, -25.13, -16.75)
CIE-LCH	lch(54.34, 30.20, 213.68°)
OKLab	oklab(59.66% -0.0864 -0.0467)
OKLCH	oklch(59.66% 0.098 208.4)
XYZ	xyz(16.3446, 22.2936, 35.7828)
Luminance	0.2230 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178F9E #9E2617

analogous

#179E6A #178F9E #174B9E

triadic

#178F9E #9E178F #8F9E17

tetradic

#178F9E #6A179E #9E2617 #4B9E17

square

#178F9E #6A179E #9E2617 #4B9E17

split-complementary

#178F9E #9E174B #9E6A17

monochromatic

#072E33 #0F5F69 #178F9E #1FBFD3 #4BD4E5

Accessibility & contrast

On white

3.85

#178F9E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#178F9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178F9E

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178F9E	#FFFFFF	#000000	##000000
##178F9E	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#81899F

Deuteranopia (green-blind)

#707D9E

Tritanopia (blue-blind)

#009693

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #178f9e;
/* rgb */ color: rgb(23, 143, 158);
/* oklch */ color: oklch(59.7% 0.098 208.4);

Tailwind

colors: {
  custom: {
    50: '#70b0ba',
    500: '#178f9e',
    950: '#000000',
  },
}

SCSS

$custom: #178f9e;
$custom-light: #70b0ba;
$custom-dark: #000000;

JSON

{
  "hex": "#178f9e",
  "rgb": {
    "r": 23,
    "g": 143,
    "b": 158
  },
  "hsl": {
    "h": 186.667,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.59658,
    "c": 0.09819,
    "h": 208.4
  },
  "luminance": 0.22296
}

Semantic roles & 50–950 ramp

primary

#178F9E

secondary

#C6584A

accent

#4B37F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178F9E

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

Preview Lab → · Contrast checker → · Palette generator →