#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
RGB	rgb(23, 139, 91)
HSL	hsl(155, 72%, 32%)
HSV	hsv(155, 83%, 55%)
CMYK	cmyk(83.5%, 0%, 34.5%, 45.5%)
CIE-LAB	lab(51.15, -42.35, 17.21)
CIE-LCH	lch(51.15, 45.71, 157.88°)
OKLab	oklab(56.43% -0.1148 0.0434)
OKLCH	oklch(56.43% 0.123 159.3)
XYZ	xyz(11.4731, 19.4013, 13.0356)
Luminance	0.1940 (WCAG relative)
Temperature	neutral
Family	teal

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
##178B5B	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

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 →