#178A8D#178A8D

#178A8D is a mid, moderate teal. Relative luminance 0.203; OKLCH L 57.7% C 0.093 H 197.7°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#178A8D
RGB	rgb(23, 138, 141)
HSL	hsl(182, 72%, 32%)
HSV	hsv(182, 84%, 55%)
CMYK	cmyk(83.7%, 2.1%, 0%, 44.7%)
CIE-LAB	lab(52.15, -28.16, -10.22)
CIE-LCH	lch(52.15, 29.95, 199.94°)
OKLab	oklab(57.69% -0.089 -0.0284)
OKLCH	oklch(57.69% 0.093 197.7)
XYZ	xyz(14.2473, 20.2804, 28.3577)
Luminance	0.2028 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178A8D #8D1A17

analogous

#178D55 #178A8D #174F8D

triadic

#178A8D #8D178A #8A8D17

tetradic

#178A8D #55178D #8D1A17 #4F8D17

square

#178A8D #55178D #8D1A17 #4F8D17

split-complementary

#178A8D #8D174F #8D5517

monochromatic

#062324 #0E5758 #178A8D #20BDC2 #3FDCE0

Accessibility & contrast

On white

4.15

#178A8D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#178A8D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178A8D

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178A8D	#FFFFFF	#000000	##000000
##178A8D	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#80838D

Deuteranopia (green-blind)

#70778E

Tritanopia (blue-blind)

#008F8B

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #178a8d;
/* rgb */ color: rgb(23, 138, 141);
/* oklch */ color: oklch(57.7% 0.093 197.7);

Tailwind

colors: {
  custom: {
    50: '#6eacae',
    500: '#178a8d',
    950: '#000000',
  },
}

SCSS

$custom: #178a8d;
$custom-light: #6eacae;
$custom-dark: #000000;

JSON

{
  "hex": "#178a8d",
  "rgb": {
    "r": 23,
    "g": 138,
    "b": 141
  },
  "hsl": {
    "h": 181.525,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.57691,
    "c": 0.09347,
    "h": 197.7
  },
  "luminance": 0.20282
}

Semantic roles & 50–950 ramp

primary

#178A8D

secondary

#C04340

accent

#3E39EF

background

#F7FAFA

surface

#EDF4F4

border

#C8CECE

text

#081010

muted

#7B7F7F

Preview Lab

Preview with #178A8D

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

Preview Lab → · Contrast checker → · Palette generator →