#178D9E#178D9E

#178D9E is a mid, moderate teal. Relative luminance 0.217; OKLCH L 59.1% C 0.098 H 210.3°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX#178D9E
RGBrgb(23, 141, 158)
HSLhsl(188, 75%, 35%)
HSVhsv(188, 85%, 62%)
CMYKcmyk(85.4%, 10.8%, 0%, 38%)
CIE-LABlab(53.71, -24.11, -17.71)
CIE-LCHlch(53.71, 29.91, 216.30°)
OKLaboklab(59.15% -0.0844 -0.0494)
OKLCHoklch(59.15% 0.098 210.3)
XYZxyz(16.0471, 21.6985, 35.6836)
Luminance0.2170 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#178D9E #9E2817
analogous
#179E6C #178D9E #17499E
triadic
#178D9E #9E178D #8D9E17
tetradic
#178D9E #6C179E #9E2817 #499E17
square
#178D9E #6C179E #9E2817 #499E17
split-complementary
#178D9E #9E1749 #9E6C17
monochromatic
#072E33 #0F5D69 #178D9E #1FBDD3 #4BD1E5

Accessibility & contrast

On white

3.93
#178D9E on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.34
#178D9E on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178D9E
5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##178D9E#FFFFFF#000000##000000
##178D9E1.003.935.345.34
#FFFFFF3.931.0021.0021.00
#0000005.3421.001.001.00
##0000005.3421.001.001.00

Color blindness preview

Protanopia (red-blind)
#7F889F
Deuteranopia (green-blind)
#6E7B9E
Tritanopia (blue-blind)
#009492
Achromatopsia (no color)
#808080

Design tokens & code

CSS
--color: #178d9e;
/* rgb */ color: rgb(23, 141, 158);
/* oklch */ color: oklch(59.1% 0.098 210.3);
Tailwind
colors: {
  custom: {
    50: '#70aeba',
    500: '#178d9e',
    950: '#000000',
  },
}
SCSS
$custom: #178d9e;
$custom-light: #70aeba;
$custom-dark: #000000;
JSON
{
  "hex": "#178d9e",
  "rgb": {
    "r": 23,
    "g": 141,
    "b": 158
  },
  "hsl": {
    "h": 187.556,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.59147,
    "c": 0.09782,
    "h": 210.3
  },
  "luminance": 0.21701
}

Semantic roles & 50–950 ramp

primary
#178D9E
secondary
#C65A4A
accent
#4E37F1
background
#F7FAFB
surface
#EDF4F6
border
#C8CED0
text
#091011
muted
#7B7F80

Preview Lab

Preview with #178D9E

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

Preview Lab → · Contrast checker → · Palette generator →

#178D9E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva