#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
RGB	rgb(23, 139, 157)
HSL	hsl(188, 74%, 35%)
HSV	hsv(188, 85%, 62%)
CMYK	cmyk(85.4%, 11.5%, 0%, 38.4%)
CIE-LAB	lab(53.04, -23.41, -18.15)
CIE-LCH	lch(53.04, 29.62, 217.79°)
OKLab	oklab(58.59% -0.0829 -0.0506)
OKLCH	oklch(58.59% 0.097 211.4)
XYZ	xyz(15.6691, 21.0797, 35.1347)
Luminance	0.2108 (WCAG relative)
Temperature	cool
Family	teal

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
##178B9D	1.00	4.03	5.22	5.22
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

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 →