#178F9D#178F9D

#178F9D is a mid, moderate teal. Relative luminance 0.223; OKLCH L 59.6% C 0.098 H 207.5°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#178F9D
RGB	rgb(23, 143, 157)
HSL	hsl(186, 74%, 35%)
HSV	hsv(186, 85%, 62%)
CMYK	cmyk(85.4%, 8.9%, 0%, 38.4%)
CIE-LAB	lab(54.30, -25.46, -16.23)
CIE-LCH	lch(54.30, 30.19, 212.51°)
OKLab	oklab(59.62% -0.0868 -0.0452)
OKLCH	oklch(59.62% 0.098 207.5)
XYZ	xyz(16.2589, 22.2593, 35.3313)
Luminance	0.2226 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178F9D #9D2517

analogous

#179D68 #178F9D #174C9D

triadic

#178F9D #9D178F #8F9D17

tetradic

#178F9D #68179D #9D2517 #4C9D17

square

#178F9D #68179D #9D2517 #4C9D17

split-complementary

#178F9D #9D174C #9D6817

monochromatic

#072E32 #0F5E68 #178F9D #1FC0D2 #4AD4E4

Accessibility & contrast

On white

3.85

#178F9D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#178F9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178F9D

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178F9D	#FFFFFF	#000000	##000000
##178F9D	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#81899E

Deuteranopia (green-blind)

#707C9D

Tritanopia (blue-blind)

#009693

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #178f9d;
/* rgb */ color: rgb(23, 143, 157);
/* oklch */ color: oklch(59.6% 0.098 207.5);

Tailwind

colors: {
  custom: {
    50: '#70b0ba',
    500: '#178f9d',
    950: '#000000',
  },
}

SCSS

$custom: #178f9d;
$custom-light: #70b0ba;
$custom-dark: #000000;

JSON

{
  "hex": "#178f9d",
  "rgb": {
    "r": 23,
    "g": 143,
    "b": 157
  },
  "hsl": {
    "h": 186.269,
    "s": 74.444,
    "l": 35.294
  },
  "oklch": {
    "l": 0.59617,
    "c": 0.09789,
    "h": 207.5
  },
  "luminance": 0.22261
}

Semantic roles & 50–950 ramp

primary

#178F9D

secondary

#C6574A

accent

#4A37F1

background

#F7FAFB

surface

#EDF5F6

border

#C8CFD0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178F9D

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

Preview Lab → · Contrast checker → · Palette generator →