#178B9D#178B9D

#178B9D is a mid, moderate teal. Relative luminance 0.211; OKLCH L 58.6% C 0.097 H 211.4°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX#178B9D
RGBrgb(23, 139, 157)
HSLhsl(188, 74%, 35%)
HSVhsv(188, 85%, 62%)
CMYKcmyk(85.4%, 11.5%, 0%, 38.4%)
CIE-LABlab(53.04, -23.41, -18.15)
CIE-LCHlch(53.04, 29.62, 217.79°)
OKLaboklab(58.59% -0.0829 -0.0506)
OKLCHoklch(58.59% 0.097 211.4)
XYZxyz(15.6691, 21.0797, 35.1347)
Luminance0.2108 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#178B9D #9D2917
analogous
#179D6C #178B9D #17489D
triadic
#178B9D #9D178B #8B9D17
tetradic
#178B9D #6C179D #9D2917 #489D17
square
#178B9D #6C179D #9D2917 #489D17
split-complementary
#178B9D #9D1748 #9D6C17
monochromatic
#072C32 #0F5C68 #178B9D #1FBAD2 #4AD0E4

Accessibility & contrast

On white

4.03
#178B9D on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.22
#178B9D on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178B9D
5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##178B9D#FFFFFF#000000##000000
##178B9D1.004.035.225.22
#FFFFFF4.031.0021.0021.00
#0000005.2221.001.001.00
##0000005.2221.001.001.00

Color blindness preview

Protanopia (red-blind)
#7D869E
Deuteranopia (green-blind)
#6B799D
Tritanopia (blue-blind)
#009290
Achromatopsia (no color)
#7F7F7F

Design tokens & code

CSS
--color: #178b9d;
/* rgb */ color: rgb(23, 139, 157);
/* oklch */ color: oklch(58.6% 0.097 211.4);
Tailwind
colors: {
  custom: {
    50: '#70adba',
    500: '#178b9d',
    950: '#000000',
  },
}
SCSS
$custom: #178b9d;
$custom-light: #70adba;
$custom-dark: #000000;
JSON
{
  "hex": "#178b9d",
  "rgb": {
    "r": 23,
    "g": 139,
    "b": 157
  },
  "hsl": {
    "h": 188.06,
    "s": 74.444,
    "l": 35.294
  },
  "oklch": {
    "l": 0.58594,
    "c": 0.09717,
    "h": 211.4
  },
  "luminance": 0.21082
}

Semantic roles & 50–950 ramp

primary
#178B9D
secondary
#C65B4A
accent
#5037F1
background
#F7FAFB
surface
#EDF4F6
border
#C8CED0
text
#091011
muted
#7B7F80

Preview Lab

Preview with #178B9D

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

Preview Lab → · Contrast checker → · Palette generator →

#178B9D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva