#178B5B#178B5B

#178B5B is a mid, vivid teal. Relative luminance 0.194; OKLCH L 56.4% C 0.123 H 159.3°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX#178B5B
RGBrgb(23, 139, 91)
HSLhsl(155, 72%, 32%)
HSVhsv(155, 83%, 55%)
CMYKcmyk(83.5%, 0%, 34.5%, 45.5%)
CIE-LABlab(51.15, -42.35, 17.21)
CIE-LCHlch(51.15, 45.71, 157.88°)
OKLaboklab(56.43% -0.1148 0.0434)
OKLCHoklch(56.43% 0.123 159.3)
XYZxyz(11.4731, 19.4013, 13.0356)
Luminance0.1940 (WCAG relative)
Temperatureneutral
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#178B5B #8B1747
analogous
#178B21 #178B5B #17818B
triadic
#178B5B #5B178B #8B5B17
tetradic
#178B5B #21178B #8B1747 #818B17
square
#178B5B #21178B #8B1747 #818B17
split-complementary
#178B5B #8B1781 #8B2117
monochromatic
#062216 #0E5639 #178B5B #20C07D #3DDF9C

Accessibility & contrast

On white

4.30
#178B5B on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.88
#178B5B on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178B5B
4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##178B5B#FFFFFF#000000##000000
##178B5B1.004.304.884.88
#FFFFFF4.301.0021.0021.00
#0000004.8821.001.001.00
##0000004.8821.001.001.00

Color blindness preview

Protanopia (red-blind)
#898058
Deuteranopia (green-blind)
#7C765E
Tritanopia (blue-blind)
#008A7E
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #178b5b;
/* rgb */ color: rgb(23, 139, 91);
/* oklch */ color: oklch(56.4% 0.123 159.3);
Tailwind
colors: {
  custom: {
    50: '#6aae89',
    500: '#178b5b',
    950: '#000000',
  },
}
SCSS
$custom: #178b5b;
$custom-light: #6aae89;
$custom-dark: #000000;
JSON
{
  "hex": "#178b5b",
  "rgb": {
    "r": 23,
    "g": 139,
    "b": 91
  },
  "hsl": {
    "h": 155.172,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.56433,
    "c": 0.12271,
    "h": 159.3
  },
  "luminance": 0.19403
}

Semantic roles & 50–950 ramp

primary
#178B5B
secondary
#BF3F74
accent
#3984EE
background
#F6FAF8
surface
#ECF4F0
border
#C7CECB
text
#08100B
muted
#7A7F7C

Preview Lab

Preview with #178B5B

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

Preview Lab → · Contrast checker → · Palette generator →

#178B5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva